Bioresource Technology Reports最新文献_第2页

Circular bioeconomy in the bioproducts industry: Utilizing cocoa and coffee husk as inert supports for the production of Trichoderma koningiopsis (Tricotec® WP) 生物制品行业的循环生物经济：利用可可和咖啡壳作为惰性载体生产柯宁质木霉（Tricotec®WP）

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-24 DOI: 10.1016/j.biteb.2025.102497

Vanessa Chavarro-Anzola , Marcela Franco-Correa , Mauricio Cruz-Barrera

{"title":"Circular bioeconomy in the bioproducts industry: Utilizing cocoa and coffee husk as inert supports for the production of Trichoderma koningiopsis (Tricotec® WP)","authors":"Vanessa Chavarro-Anzola , Marcela Franco-Correa , Mauricio Cruz-Barrera","doi":"10.1016/j.biteb.2025.102497","DOIUrl":"10.1016/j.biteb.2025.102497","url":null,"abstract":"<div><div>The concept of circular bioeconomy has emerged as a sustainable strategy to addressing waste management, environmental degradation, and the demand for renewable resources. In the bioproducts industry, applying these principles enables the transformation of agricultural waste into valuable bio-based products. This study explores the potential of cocoa and coffee husks-bioproducts of the chocolate and coffee industries- as inert substrates for the production of <em>Trichoderma koningiopsis</em> - Th003, a beneficial fungus used in biocontrol and biofertilization. The research aims to assess the suitability of cocoa and coffee husks as growth substrates for <em>T. koningiopsis –</em> Th003. The husks underwent pre-treatment processes to remove contaminants and enhance their properties. Subsequently, <em>T. koningiopsis-</em> Th003 was inoculated on the treated husks and cultivated under controlled laboratory conditions. Fungal growth kinetics, biomass production, and viability were monitored throughout the process. The highest conidial concentration achieved was <span><math><mn>1.12</mn><mo>×</mo><msup><mn>10</mn><mn>9</mn></msup><mspace></mspace></math></span>conidia/g in cocoa husks and <span><math><mn>4.30</mn><mo>×</mo><msup><mn>10</mn><mn>8</mn></msup><mspace></mspace></math></span>conidia/g in coffee husks, comparable to the standard substrate (rice with wheat bran). Utilizing these agro-industrial waste materials as substrates for <em>T. koningiopsis</em>-Th003 let to production cost savings of up to 20 %. A second fermentation cycle with the waste materials yielded <span><math><mn>2</mn><mo>×</mo><msup><mn>10</mn><mn>9</mn></msup><mspace></mspace></math></span>conidia/g in coffee husks, leading to savings of up to 50 %. These findings demonstrated the potential of coffee and cocoa husks as promising alternatives to cereal-based substrates for production active ingredients.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102497"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isolation and characterization of bacteria associated with the cultured diatom Halamphora sp.: Focus on heavy metal resistance and bioremediation potential 培养硅藻Halamphora sp.相关细菌的分离与鉴定：重点研究重金属抗性及其生物修复潜力

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-29 DOI: 10.1016/j.biteb.2025.102510

Min-Ying Wang , Yi-Fang Chang , Sally Wang , Chen-Hao Lin , William E. Bentley , Su-Yuan Lai

{"title":"Isolation and characterization of bacteria associated with the cultured diatom Halamphora sp.: Focus on heavy metal resistance and bioremediation potential","authors":"Min-Ying Wang , Yi-Fang Chang , Sally Wang , Chen-Hao Lin , William E. Bentley , Su-Yuan Lai","doi":"10.1016/j.biteb.2025.102510","DOIUrl":"10.1016/j.biteb.2025.102510","url":null,"abstract":"<div><div>Symbiotic relationships between microalgae and bacteria can play a crucial role in enhancing metal resistance and promoting bioremediation. The phycosphere refers to the microscale chemical boundary layer surrounding microalgal cells, where algae release dissolved organic matter and metabolites that attract and support associated microorganisms. In this study, 40 bacterial species were isolated and molecularly characterized directly from the phycosphere of the marine diatom <em>Halamphora</em> sp. (AQ4), and their resistance to heavy metal ions was subsequently evaluated under high-salt marine conditions. Our preliminary screening revealed two <em>Brachybacterium</em> strains (A4005, A4006) with exceptionally high tolerance to Co<sup>2+</sup> up to 500 mM, and three <em>Nitratireductor</em> strains (A4017, A4019, and A4020) to 125 mM. For Ni<sup>2+</sup>, A4005 and A4017 displayed nearly 60 % viability at 125 mM. Strains A4005, A4006, and A4019 tolerated concentrations of 15.625 mM of Zn<sup>2+</sup>. Further testing confirmed that <em>Brachybacterium</em> strains exhibited higher viabilities across all tested metals compared to <em>Nitratireductor</em>, especially A4006, highlighting its potential for bioremediation. Future research will explore the mechanisms behind this metal tolerance and its practical applications in environmental biotechnology.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102510"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eco-valorization of Persicaria hydropiper through mono- and polyculture vermistabilization with Eisenia fetida and Eudrilus eugeniae: Phytotoxicity alleviation and morphophysiological performance of Capsicum chinense 与臭爱森菌和eugenevirus单、复培养拮抗辣椒的生态价值：辣椒的植物毒性缓解和形态生理性能

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2026-01-09 DOI: 10.1016/j.biteb.2026.102555

Dimbeswar Das , Pankaj Kalita , Sumpam Tangjang

{"title":"Eco-valorization of Persicaria hydropiper through mono- and polyculture vermistabilization with Eisenia fetida and Eudrilus eugeniae: Phytotoxicity alleviation and morphophysiological performance of Capsicum chinense","authors":"Dimbeswar Das , Pankaj Kalita , Sumpam Tangjang","doi":"10.1016/j.biteb.2026.102555","DOIUrl":"10.1016/j.biteb.2026.102555","url":null,"abstract":"<div><div><em>Persicaria hydropiper</em>, a problematic invasive species, remains least explored in terms of biomass valorisation through sustainable bioconversion methods. This study investigates the potential of <em>P. hydropiper</em> biomass for vermicomposting using mono- <em>E. fetida</em> (VC1), <em>E. eugeniae</em> (VC2) and polyculture (VC3) earthworm systems. The resulting vermicomposts were assessed for physicochemical changes, microbial proliferation, humification parameters, Phytotoxicity via GI bioassay, and agronomic impact on <em>Capsicum chinense</em>. The results revealed a significant improvement in nutrient profiles across treatments, with the highest total nitrogen (15.22 ± 0.35 g/kg), phosphorus (4640.03 ± 13.79 mg/kg), and potassium (129.06 ± 4.10 mg/kg). Phytotoxicity, as indicated by GI was reduced up to 44%. VC1 achieved the highest bioconversion efficiency (69 ± 2.64%) while VC3 showed superior microbial enrichment. Maximum yield reached 1.16 ± 0.01 kg/plant (≈3-fold over control). These findings establish vermicomposting of <em>P. hydropiper</em> as an effective strategy for invasive weed biomass management, offering a nutrient-rich organic amendment.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102555"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sequential valorization of under-utilized pony fish (Leiognathus spp.): A bio-refinery approach for the production of fish stock, protein isolate, bio‑calcium and lipids 未充分利用的小马驹鱼（leognathus spp.）的顺序增值：一种生产鱼油、分离蛋白、生物钙和脂质的生物精炼厂方法

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-08 DOI: 10.1016/j.biteb.2025.102466

Deepadharshini Palanimuthu , Soottawat Benjakul , Jeya Shakila Robinson , Shalini Rajendran , Renuka Vijayakumar , Masilan Karunanithi , Vaisshali Prakash Arul Prakasam , Gokulprasanth Murugan , Muralidharan Nagarajan

{"title":"Sequential valorization of under-utilized pony fish (Leiognathus spp.): A bio-refinery approach for the production of fish stock, protein isolate, bio‑calcium and lipids","authors":"Deepadharshini Palanimuthu , Soottawat Benjakul , Jeya Shakila Robinson , Shalini Rajendran , Renuka Vijayakumar , Masilan Karunanithi , Vaisshali Prakash Arul Prakasam , Gokulprasanth Murugan , Muralidharan Nagarajan","doi":"10.1016/j.biteb.2025.102466","DOIUrl":"10.1016/j.biteb.2025.102466","url":null,"abstract":"<div><div>The under-utilized bycatch, <em>Leiognathus</em> spp. has been realized as valuable protein resource, though it often discarded and cause economic and ecological challenges. A sequential bio-refinery model to valorize this low value species has been applied and developed four distinct products such as fish stock (FS), fish protein isolate (FPI), fish bone bio‑calcium (BC) and lipids. Fish stock containing predominant glycine (0.27 %) along with trace minerals, was developed for culinary applications. Fish protein isolate from <em>Leiognathus</em> spp. (LFPI) obtained via pH-shift method recovered from the residual meat (15.55 wt%), exhibited higher colloidal stability (<strong><em>ζ-</em></strong>potential = −35 mV) and good functionality (Emulsion Activity Index, 1.25 m<sup>2</sup>/g). The bone fraction yielded bio‑calcium identified as type-B hydroxyapatite with >72 % crystallinity, 2.0 Ca/P ratio and proved a potential calcium source. Nevertheless, sequentially extracted lipids also showed favorable ω-3and ω-6 fatty acid profile. Therefore, the integrated pathway confirmed a viable strategy for total valorization of marine bycatch and promoted effective valorization of resource use for circular bio-economy.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102466"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145788498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Centrifugation, filtration or magnetic extraction: Evaluation of catalyst recovery technique in biodiesel production 离心、过滤或磁萃取：生物柴油生产中催化剂回收技术的评价

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-11 DOI: 10.1016/j.biteb.2025.102471

Anton N. Potorochenko, Artem A. Ovchinnikov, Konstantin S. Rodygin

{"title":"Centrifugation, filtration or magnetic extraction: Evaluation of catalyst recovery technique in biodiesel production","authors":"Anton N. Potorochenko, Artem A. Ovchinnikov, Konstantin S. Rodygin","doi":"10.1016/j.biteb.2025.102471","DOIUrl":"10.1016/j.biteb.2025.102471","url":null,"abstract":"<div><div>Efficient recovery and reuse of heterogeneous catalysts is vital for the economic viability of catalytic technologies. In this work, three catalyst recycling methods – filtration, centrifugation and magnetic extraction – were systematically compared for the first time on a single catalyst over five cycles in a biodiesel production. CaO-based magnetic catalyst was synthesized from calcium carbide slag (CS) and Fe<sub>3</sub>O<sub>4</sub> by wet impregnation followed by calcination at 600 °C for 2 h (CS-Fe-600). Under optimal conditions (5 wt% catalyst loading, the oil to methanol molar ratio = 1:12, reaction temperature 65°С and time 2 h), the biodiesel yield was 99 % after the first cycle. After five reuses, filtration maintained the highest performance (90 % yield, 81 % recovery), centrifugation demonstrated moderate stability (82 % yield, 67 % recovery), while magnetic separation led to rapid catalyst loss (84 % yield, 28 % recovery). The catalyst was characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray Fluorescence (XRF), Scanning Electron Microscope (SEM) equipped with Energy Dispersive X-ray (EDX) and thermogravimetric analysis (TG). According to XRD, the catalyst underwent phase transformations during reuse, including a decrease in CaO content from 50.3 wt% to 13–18 wt% after the first cycle and the subsequent formation of Ca(OH)₂ and calcium diglyceroxide as the main phases.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102471"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145788482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progress in nature-based techniques for emerging contaminant removal: Knowledge gaps, limitations, and future scope 基于自然的新兴污染物去除技术的进展：知识差距、限制和未来范围

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-06 DOI: 10.1016/j.biteb.2025.102462

Palindhi Verma , Tarini Prasad Sahoo , Sanak Ray

{"title":"Progress in nature-based techniques for emerging contaminant removal: Knowledge gaps, limitations, and future scope","authors":"Palindhi Verma , Tarini Prasad Sahoo , Sanak Ray","doi":"10.1016/j.biteb.2025.102462","DOIUrl":"10.1016/j.biteb.2025.102462","url":null,"abstract":"<div><div>Emerging contaminants (ECs), including pharmaceuticals, personal care products, endocrine-disrupting chemicals, plasticizers, and flame retardants, pose significant threats to aquatic environments and human health. Conventional wastewater treatment technologies are often inadequate for ECs removal, necessitating the exploration of sustainable alternatives. This review presents a comprehensive assessment of recent advancements in nature-based solutions (NbS) for the removal of ECs from wastewater. It highlights the efficacy, mechanisms, and limitations of various systems such as constructed wetlands (CWs), bio-electrochemical systems, biochar-based filters, algae-based systems, and hybrid approaches. Key innovations such as substrate modification with functionalized biochar, hybrid CW-MFC configurations, and algae-biochar consortia have significantly enhanced pollutant removal, achieving >90 % elimination for many pharmaceuticals, endocrine disruptors, and persistent organics. Beyond pollutant removal, these systems offer co-benefits of nutrient recovery, energy generation, microbial enrichment, and reduced operational costs, positioning them as multifunctional solutions for wastewater management. Critical challenges remain, including variability in performance, proliferation of antibiotic resistance genes, and limited scalability under real-world conditions. Future research should focus on hybrid eco-engineered designs, real-time monitoring tools, and standardized evaluation protocols to enable robust field-scale applications. Advancements in nature-based techniques to address emerging global challenges can significantly contribute to achieving Sustainable Development Goal 9 (Industry, Innovation, and Infrastructure) and 11 (Sustainable Cities and Communities), fostering resilient and sustainable development.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102462"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145788483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A critical review in evaluating the feasibility of nitrous oxide recovery from tannery effluent treatment plants for potential enhanced energy generation 评价从制革厂废水处理厂回收氧化亚氮用于潜在增强能源生产的可行性的关键审查

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-17 DOI: 10.1016/j.biteb.2025.102488

Roumi Bhattacharya , Sri Bala Kameswari Kanchinadham

{"title":"A critical review in evaluating the feasibility of nitrous oxide recovery from tannery effluent treatment plants for potential enhanced energy generation","authors":"Roumi Bhattacharya , Sri Bala Kameswari Kanchinadham","doi":"10.1016/j.biteb.2025.102488","DOIUrl":"10.1016/j.biteb.2025.102488","url":null,"abstract":"<div><div>Biological wastewater treatment systems unintentionally emit nitrous oxide (N<sub>2</sub>O), a greenhouse gas (GHG) with a global warming potential of 273 times that of carbon dioxide (CO<sub>2</sub>). The emissions from plants treating high-strength wastewater, such as tannery effluents, are more intense compared to municipal wastewater treatment units. Operational challenges and complexity of design parameters limit the functionality of N<sub>2</sub>O emission abatement measures from the nitrogen removal systems. From the resource recovery perspective, N<sub>2</sub>O presents a promising characteristic as an energy carrier and an oxidant for co-combustion with methane (CH<sub>4</sub>) which enhances bioenergy production than that using oxygen for CH<sub>4</sub> combustion. The present review evaluates the feasibility of using N<sub>2</sub>O from tannery effluent treatment plants (TETP) coupled with CH<sub>4</sub> generated from anaerobic digesters for higher energy recovery. Till date, the area of potential higher energy generation along with control of GHG emission from TETP is not yet explored. This critical summary presented in this article discusses the hypothesis of the process introduced by lab-scale studies related to reuse of N<sub>2</sub>O, highlighting the state-of-art research in this sector and the challenges and concerns that can be faced in the process of N<sub>2</sub>O recovery from tannery wastewater and its use as a fuel additive.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102488"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Treatment of beverage wastewater using microalgae: A focus on COD removal, biomass production, and lipid accumulation 微藻处理饮料废水：侧重于COD去除、生物质生产和脂质积累

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-09 DOI: 10.1016/j.biteb.2025.102467

Md Abul Hasanath , Anshuman Panigrahi , Narnepati Krishna Chaitanya , Pritha Chatterjee

{"title":"Treatment of beverage wastewater using microalgae: A focus on COD removal, biomass production, and lipid accumulation","authors":"Md Abul Hasanath , Anshuman Panigrahi , Narnepati Krishna Chaitanya , Pritha Chatterjee","doi":"10.1016/j.biteb.2025.102467","DOIUrl":"10.1016/j.biteb.2025.102467","url":null,"abstract":"<div><div>This study assessed the efficiency of freshwater microalgae <em>Scenedesmus obliquus</em> and <em>Chlorella pyrenoidosa</em> for treating beverage wastewater containing high COD (5015 mg L<sup>−1</sup>) with low nitrogen (11 mg L<sup>−1</sup>) and phosphorus (7 mg L<sup>−1</sup>) concentrations. Using response surface methodology, fed-batch experiments optimized illumination wavelength, temperature, and photoperiod for COD removal, biomass production, and lipid content. <em>S. obliquus</em> achieved the highest COD removal (83 %) at 35 °C with 16 h of red illumination, outperforming <em>C. pyrenoidosa</em> (75 %). White illumination maximized biomass concentration, yielding nearly 4.8 g L<sup>−1</sup> for both strains. Although blue illumination improved lipid accumulation (42–48 %), net lipid yield peaked at 1.17–1.24 g L<sup>−1</sup> under conditions that also maximized COD removal. Both strains demonstrated similar adaptability and performance, with operational factors significantly impacting responses, achieving a biomass heating value of 18–23 MJ kg<sup>−1</sup>. The findings highlight the potential of two microalgae for nutrient-poor beverage wastewater treatment at laboratory scales.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102467"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Iron nanoparticle-driven modulation of photosynthetic metabolisms for lutein and biofuel precursors enhancement in Chlorella variabilis 铁纳米颗粒驱动的叶黄素和生物燃料前体在小球藻变异中的光合代谢调节

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2026-01-12 DOI: 10.1016/j.biteb.2026.102564

Yamini Sumathi , Anil Kumar Patel , Prashant Kumar , Cheng-Di Dong , Reeta Rani Singhania

{"title":"Iron nanoparticle-driven modulation of photosynthetic metabolisms for lutein and biofuel precursors enhancement in Chlorella variabilis","authors":"Yamini Sumathi , Anil Kumar Patel , Prashant Kumar , Cheng-Di Dong , Reeta Rani Singhania","doi":"10.1016/j.biteb.2026.102564","DOIUrl":"10.1016/j.biteb.2026.102564","url":null,"abstract":"<div><div>Fe<sub>3</sub>O<sub>4</sub> nanoparticles can modulate algal physiology by enhancing nutrient bioavailability and intracellular electron transfer. This study investigated their effect on <em>Chlorella variabilis</em>, focusing on biomass and metabolite production. Controlled supplementation improved iron assimilation and surface functionalization, as confirmed by Fe 2p XPS signals and shifts in C<img>O and C<img>O bonding, supported by FTIR and SEM analyses. At 20 mg/L, biomass increased to 6.5 g/L (26% increase) and lutein content enhanced to 18.9 mg/g (24% increase) compared to the control, which may be attributed to iron-mediated activation of carotenoid biosynthetic enzymes and enhanced photosynthetic electron flow as a working hypothesis. Protein and carbohydrate contents increased by 30.6% and 24.4%, respectively. Higher exposure (60 mg/L) induced ROS generation, redirecting carbon flux towards lipid accumulation (29.6% DW). The bioenergy potential of biomass ranged from 620 to 805 kJ/g DW, whereas the residual biomass also exhibited a bioenergy potential of 817 kJ/g DW, due to the redistribution of energy-dense components without a substantial loss of bioenergy potential. These results demonstrate that Fe<sub>3</sub>O<sub>4</sub> nanoparticles act as micronutrient enhancers and metabolic modulators, providing a sustainable strategy for high-value metabolite production that aligns with the Sustainable Development Goals: Industry innovation (SDG 9), and responsible consumption and production (SDG 12).</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102564"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Process improvement for high-quality palm kernel amidopropyl betaine (PKAPB) from splitted palm kernel fatty acid (SPKFA) 棕榈仁脂肪酸裂解制备高品质棕榈仁偕丙基甜菜碱的工艺改进

Bioresource Technology Reports Pub Date : 2026-02-01 Epub Date: 2025-12-17 DOI: 10.1016/j.biteb.2025.102479

Astri Nur Istyami, Meiti Pratiwi, Adhelya Zahra Nafisa, Denisa Putri Bunda

{"title":"Process improvement for high-quality palm kernel amidopropyl betaine (PKAPB) from splitted palm kernel fatty acid (SPKFA)","authors":"Astri Nur Istyami, Meiti Pratiwi, Adhelya Zahra Nafisa, Denisa Putri Bunda","doi":"10.1016/j.biteb.2025.102479","DOIUrl":"10.1016/j.biteb.2025.102479","url":null,"abstract":"<div><div>Cocamidopropyl betaine (CAPB) is a mild secondary surfactant widely used in care and cleaning products. Indonesia imported 15,000 tons in 2020, reflecting high domestic demand. To reduce reliance on imported CAPB, this study explores the production of palm kernel amidopropyl betaine (PKAPB) from splitted palm kernel fatty acid (SPKFA), a locally available feedstock. Unlike purified lauric acid, SPKFA allows fractionation-free processing but presents challenges such as oxidation and product browning. This work investigates the effect of nitrogen purging during amidation and the addition of makeup dimethylaminopropylamine (DMAPA) on product quality. The product was synthesized via amidation and carboxymethylation and evaluated based on acid number, viscosity, active matter content, and color to match the commercial CAPB specification. Nitrogen flow up to 100 mL/min enhanced product clarity but increased acid number and viscosity due to DMAPA loss. Supplementing with ≥30 % DMAPA mitigated this issue, ensuring a more stable product. The optimized PKAPB met commercial CAPB benchmarks, demonstrating its potential as a sustainable, locally sourced alternative to imported CAPB.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"33 ","pages":"Article 102479"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0