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Microbial Protein and Metabolite Profiles of Klebsiella oxytoca M5A1 in a Bubble Column Bioreactor. 气泡柱生物反应器中氧合克雷伯氏菌 M5A1 的微生物蛋白质和代谢物谱。
IF 2.7
BioTech Pub Date : 2024-10-19 DOI: 10.3390/biotech13040043
Tawakalt Ayodele, Musiliu Liadi, Abodunrin Tirmidhi Tijani, Kudirat Alarape, Christiana Bitrus, Clairmont L Clementson, Ademola Hammed
{"title":"Microbial Protein and Metabolite Profiles of <i>Klebsiella oxytoca M5A1</i> in a Bubble Column Bioreactor.","authors":"Tawakalt Ayodele, Musiliu Liadi, Abodunrin Tirmidhi Tijani, Kudirat Alarape, Christiana Bitrus, Clairmont L Clementson, Ademola Hammed","doi":"10.3390/biotech13040043","DOIUrl":"https://doi.org/10.3390/biotech13040043","url":null,"abstract":"<p><p>The production of microbial proteins (MPs) has emerged as a critical focus in biotechnology, driven by the need for sustainable and scalable alternatives to traditional protein sources. This study investigates the efficacy of two experimental setups in producing MPs using the nitrogen-fixing bacterium <i>Klebsiella oxytoca M5A1</i>. <i>K. oxytoca M5A1</i>, known for its facultative anaerobic growth and capability to fix atmospheric nitrogen, offers a promising avenue for environmentally friendly protein production. This research compares the performance of a simple bubble column (BC) bioreactor, which promotes efficient mixing and cross-membrane gas transfer, with static fermentation, a traditional method lacking agitation and aeration. The study involved the parallel cultivation of <i>K. oxytoca M5A1</i> in both systems, with key parameters such as microbial growth, glucose utilization, protein concentration, and metabolite profiles monitored over a 48 h period. The results indicate that the BC bioreactor consistently outperformed static fermentation regarding the growth rate, protein yield, and glucose utilization efficiency. The BC exhibited a significant increase in protein production, reaching 299.90 µg/mL at 48 h, compared to 219.44 µg/mL in static fermentation. The organic acid profile reveals both synthesis and utilization regimes of varying patterns. These findings highlight the advantages of the BC bioreactor for MP production, particularly its ability to maintain aerobic conditions that support higher growth and yield.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503442/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phytochemical Composition, Antioxidant, Anti-Helicobacter pylori, and Enzyme Inhibitory Evaluations of Cleistocalyx operculatus Flower Bud and Leaf Fractions. Cleistocalyx operculatus 花蕾和叶片提取物的植物化学成分、抗氧化性、抗幽门螺旋杆菌和酶抑制性评价
IF 2.7
BioTech Pub Date : 2024-10-11 DOI: 10.3390/biotech13040042
Doan Thien Thanh, Mai Thanh Tan, Nguyen Thi My Thu, Pham Nhat Phuong Trinh, Pham Thi Hoai Thuong, Pham Thi Giang Tuyet, Luong Thi My Ngan, Tran Trung Hieu
{"title":"Phytochemical Composition, Antioxidant, Anti-<i>Helicobacter pylori</i>, and Enzyme Inhibitory Evaluations of <i>Cleistocalyx operculatus</i> Flower Bud and Leaf Fractions.","authors":"Doan Thien Thanh, Mai Thanh Tan, Nguyen Thi My Thu, Pham Nhat Phuong Trinh, Pham Thi Hoai Thuong, Pham Thi Giang Tuyet, Luong Thi My Ngan, Tran Trung Hieu","doi":"10.3390/biotech13040042","DOIUrl":"https://doi.org/10.3390/biotech13040042","url":null,"abstract":"<p><p>Six solvent fractions isolated from flower bud and leaf ethanolic extracts of <i>Cleistocalyx operculatus</i> were analyzed for their phytochemical contents, including phenolics, flavonoids, saponins, tannins, and alkaloids. Antioxidant activities were measured using the ABTS, DPPH, and FRAP assays. The results showed that the flower bud aqueous fraction (BAF) and the leaf aqueous fraction (LAF) rich in phenolic content (768.18 and 490.74 mg GAE/g dry extract, respectively) exhibited significantly higher antioxidant activities than the other fractions. The flower bud hexane fraction (BHF) had remarkably high flavonoid and saponin contents (134.77 mg QE/g and 153.33 mg OA/g dry extract, respectively), followed by that of the leaf hexane fraction (LHF) (76.54 mg QE/g and 88.25 mg OA/g dry extract, respectively). The BHF and LHF were found to have extremely high antibacterial activity against two <i>H. pylori</i> strains, ATCC 51932 and 43504 (MICs of 125 µg/mL). Interestingly, DMC (2',4'-Dihydroxy-6'-methoxy-3',5'-dimethylchalcone) isolated from the BHF displayed greater antibacterial activity against the bacterial strains (MICs of 25-50 µg/mL) than those of the fractions. In addition, DMC presented potent inhibitory effects on <i>H. pylori</i> urease (IC<sub>50</sub> of 3.2 µg/mL) and α-amylase (IC<sub>50</sub> of 83.80 µg/mL), but no inhibition against α-glucosidase. It was also demonstrated that DMC showed pronounced inhibitory effects on the urease activity and biofilm formation of <i>H. pylori</i>, and could increase the membrane permeability of the bacterial cells. Scanning electron micrographs depicted that the BHF and DMC had strong effects on the cell shape and significantly induced the distortion and damage of the cell membrane. The fractions and DMC showed no significant toxicity to four tested human cell lines. Efforts to reduce antibiotic use indicate the need for further studies of the flower buds and DMC as potential products to prevent or treat gastric <i>H. pylori</i> infections.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503338/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural Analysis and Substrate Specificity of D-Carbamoylase from Pseudomonas. 假单胞菌 D-氨基甲酰酶的结构分析和底物特异性
IF 2.7
BioTech Pub Date : 2024-10-03 DOI: 10.3390/biotech13040040
Marina Paronyan, Haykanush Koloyan, Hovsep Aganyants, Artur Hambardzumyan, Tigran Soghomonyan, Sona Avetisyan, Sergey Kocharov, Henry Panosyan, Vehary Sakanyan, Anichka Hovsepyan
{"title":"Structural Analysis and Substrate Specificity of D-Carbamoylase from <i>Pseudomonas</i>.","authors":"Marina Paronyan, Haykanush Koloyan, Hovsep Aganyants, Artur Hambardzumyan, Tigran Soghomonyan, Sona Avetisyan, Sergey Kocharov, Henry Panosyan, Vehary Sakanyan, Anichka Hovsepyan","doi":"10.3390/biotech13040040","DOIUrl":"https://doi.org/10.3390/biotech13040040","url":null,"abstract":"<p><p>The synthesis of enantiomeric forms of D-amino acids can be achieved by a two-step \"hydantoinase process\" based on the sequential catalysis of substrates by specific enzymes, D-carbamoylase and D-hydantoinase. Here, we describe the structural features of D-carbamoylase from <i>Pseudomonas</i>, the encoded gene of which was chemically synthesized and cloned into <i>Escherichia coli</i>. A significant fraction of the overexpressed recombinant protein forms insoluble inclusion bodies, which are partially converted to a soluble state upon treatment with N-lauroylsarcosine or upon incubation of cells at 28 °C. Purified His-tagged protein exhibits the highest activity towards N-carbamoyl-D-alanine and N-carbamoyl-D-tryptophan. Comprehensive virtual analysis of the interactions of bulky carbamylated amino acids with D-carbamoylase provided valuable information. Molecular docking analysis revealed the location of the substrate binding site in the three-dimensional structure of D-carbamoylase. Molecular dynamics simulations showed that the binding pocket of the enzyme in complex with N-carbamoyl-D-tryptophan was stabilized within 100 nanoseconds. The free energy data showed that Arg176 and Asn173 formed hydrogen bonds between the enzyme and substrates. The studies of D-carbamoylases and the properties of our previously obtained D-hydantoinase suggest the possibility of developing a harmonized biotechnological process for the production of new drugs and peptide hormones.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503299/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Loss of Cell-Cell Contact Inhibits Cellular Differentiation of α-Catenin Knock Out P19 Embryonal Carcinoma Cells and Their Colonization into the Developing Mouse Embryos. 细胞-细胞接触的丧失抑制了α-Catenin基因敲除的P19胚胎癌细胞的细胞分化及其在发育中小鼠胚胎中的定植。
IF 2.7
BioTech Pub Date : 2024-10-03 DOI: 10.3390/biotech13040041
Masahiro Sato, Emi Inada, Naoko Kubota, Masayuki Ozawa
{"title":"Loss of Cell-Cell Contact Inhibits Cellular Differentiation of α-Catenin Knock Out P19 Embryonal Carcinoma Cells and Their Colonization into the Developing Mouse Embryos.","authors":"Masahiro Sato, Emi Inada, Naoko Kubota, Masayuki Ozawa","doi":"10.3390/biotech13040041","DOIUrl":"https://doi.org/10.3390/biotech13040041","url":null,"abstract":"<p><p>Cadherin-catenin cell-cell adhesion complexes, composed of cadherin, β-catenin or plakoglobin, and α-catenin (α-cat) molecules, are crucial for maintaining cell-cell contact and are commonly referred to as \"adherens junctions (AJs).\" Inactivating this system leads to loss of cell-cell contact and developmental arrest in early embryos. However, it remains unclear whether the loss of cell-cell contact affects the differentiation of embryonic cells. In this study, we explored the use of a murine embryonal carcinoma cell line, P19, as an in vitro model for early embryogenesis. P19 cells easily form embryoid bodies (EBs) and are susceptible to cellular differentiation in response to retinoic acid (RA) and teratoma formation. Using CRISPR/Cas9 technology to disrupt the endogenous <i>α-cat</i> gene in P19 cells, we generated <i>α-cat</i> knockout (KO) cells that exhibited a loss of cell-cell contact. When cultivated on non-coated dishes, these <i>α-cat</i> KO cells formed EBs, but their structures were labile. In the RA-containing medium, the <i>α-cat</i> KO EBs failed to produce differentiated cells on their outer layer and continued to express SSEA-1, an antigen specific to pluripotent cells. Teratoma formation assays revealed an absence of overt differentiated cells in tumors derived from <i>α-cat</i> KO P19 cells. Aggregation assays revealed the inability of the KO cells to colonize into the zona pellucida-denuded 8-cell embryos. These findings suggest that the AJs are essential for promoting the early stages of cellular differentiation and for the colonization of early-developing embryos.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509493","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
Optimization of Sugar Extraction Process from Date Waste Using Full Factorial Design Toward Its Use for New Biotechnological Applications. 利用全因子设计优化从红枣废弃物中提取糖的工艺,以将其用于新的生物技术应用。
IF 2.7
BioTech Pub Date : 2024-10-03 DOI: 10.3390/biotech13040039
Islam Sayah, Mondher Njehi, Nicola Cicero, Vincenzo Nava, Manel Ben M'hadheb, Hatem Majdoub, Sami Achour, Teresa Gervasi
{"title":"Optimization of Sugar Extraction Process from Date Waste Using Full Factorial Design Toward Its Use for New Biotechnological Applications.","authors":"Islam Sayah, Mondher Njehi, Nicola Cicero, Vincenzo Nava, Manel Ben M'hadheb, Hatem Majdoub, Sami Achour, Teresa Gervasi","doi":"10.3390/biotech13040039","DOIUrl":"https://doi.org/10.3390/biotech13040039","url":null,"abstract":"<p><p>In Tunisia, the date industry generates a large quantity of waste, raising environmental concerns. However, dates are rich in sugars, which offer a renewable source of nutrients for various applications. In this study, sugar extraction from two low-grade pitted date fruits (Alig and Kentichi) under ultrasound, was optimized using full factorial design. At 40 °C, for20 min, and with a liquid-to-solid ratio of 10 mL/g, the optimum sugar contents were 60.87% and 50.79% for the varieties Alig and Kentichi, respectively. The date extracts were chemically analyzed, revealing low fat and protein contents, but significant polyphenol and mineral contents in both varieties. HPLC-IR analysis revealed more inverted sugars (glucose and fructose) in the Alig variety and more sucrose in the Kentichi variety. FTIR and SEM analysis showed the efficiency of the ultrasonic treatment of the biomass in terms of improving mass transfer diffusion through ultrasonic cavitation. Thus, ultrasound-assisted extraction constitutes an effective method for the recovery of sugar from date waste.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503435/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemical, Textural and Antioxidant Properties of Oat-Fermented Beverages with Different Starter Lactic Acid Bacteria and Pectin. 使用不同起始乳酸菌和果胶的燕麦发酵饮料的化学、质地和抗氧化特性
IF 2.7
BioTech Pub Date : 2024-09-25 DOI: 10.3390/biotech13040038
Dmitrii V Khrundin, Elena V Nikitina
{"title":"Chemical, Textural and Antioxidant Properties of Oat-Fermented Beverages with Different Starter Lactic Acid Bacteria and Pectin.","authors":"Dmitrii V Khrundin, Elena V Nikitina","doi":"10.3390/biotech13040038","DOIUrl":"https://doi.org/10.3390/biotech13040038","url":null,"abstract":"<p><p>Currently, starter cultures for fermenting plant-based beverages are not widely available commercially, but producers can use starter cultures for dairy products. Therefore, the aim of this study was to determine the physicochemical, rheological, antioxidant and sensory properties of oat beverages with/without pectin fermented by four different dairy starter cultures. The use of a mono-starter with <i>Lactobacillus bulgaricus</i> or <i>Sreptococcus thermophilus</i> allows for the efficient use of glucose, and more lactic acid is accumulated. The beverage with <i>L. bulgaricus</i> is characterised by high adhesion, syneresis and low cohesiveness, and it has high antioxidant activity and a low sensory profile. Using starter with <i>L. bulgaricus</i>, <i>S. thermophilus</i> and some <i>Lactococcus</i> for fermentation yields a product with high sensory capacity, forming a high-viscosity beverage matrix with low syneresis, high water retention, chewy texture and stickiness. It has been observed that the absence of lactococci and the presence of <i>Lactobacillus casei</i>, <i>L. Rhamnosus</i> and <i>L. paracasei</i> in the starter yields a product with high antioxidant activity, especially in the presence of pectin. The use of pectin significantly improves the viscosity and textural properties of oat yoghurt, enhancing the drink's flavour and giving it body. For many reasons, the use of different commercial starters in the dairy industry results in different viscosities of oat fermented beverages, forming a matrix with different textural, sensory and antioxidant properties.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11503288/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142509492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Elimination of Viroids through In Vitro Thermotherapy and a Meristem Tip Culture from a New Limonime Hybrid (Citrus x limon var. limon (L.) Burm. f. x Citrus latifolia var. latifolia). 通过体外热疗和新柠檬杂交种(Citrus x limon var.
IF 2.7
BioTech Pub Date : 2024-09-23 DOI: 10.3390/biotech13030037
Virginia Sarropoulou, Katerina Grigoriadou, Varvara I Maliogka, Chrysoula-Lito Sassalou, Vasileios Ziogas
{"title":"The Elimination of Viroids through In Vitro Thermotherapy and a Meristem Tip Culture from a New Limonime Hybrid (<i>Citrus</i> x <i>limon</i> var. <i>limon</i> (L.) Burm. f. x <i>Citrus latifolia</i> var. <i>latifolia</i>).","authors":"Virginia Sarropoulou, Katerina Grigoriadou, Varvara I Maliogka, Chrysoula-Lito Sassalou, Vasileios Ziogas","doi":"10.3390/biotech13030037","DOIUrl":"https://doi.org/10.3390/biotech13030037","url":null,"abstract":"<p><p>Viruses and viroids pose a significant challenge in citriculture, and their control is crucial for plant health. This study evaluated the effectiveness of in vitro thermotherapy combined with a meristem tip culture for eliminating citrus exocortis viroid (CEVd) and hop stunt viroid (HSVd) from a new limonime hybrid (<i>Citrus</i> x <i>limon</i> var. <i>limon</i> x <i>Citrus latifolia</i> var. <i>latifolia</i>). The elimination success was confirmed by RT-PCR assays. The in vitro elimination rate for CEVd during the shoot proliferation stage (43%) was higher than for HSVd (21%). Accordingly, in the subsequent rooting stage, the in vitro elimination rate for CEVd (50%) was higher than for HSVd (33%). Successful CEVd and HSVd eradication at a 100% rate was confirmed in the ex vitro acclimatized plants in the greenhouse. The study also established an efficient micropropagation protocol. The optimal treatment for in vitro shoot induction was 0.5-2 mg L<sup>-1</sup> benzyladenine (BA) + 0.5 mg L<sup>-1</sup> gibberellic acid (GA<sub>3</sub>) + 0.25 mg L<sup>-1</sup> naphthalene acetic acid (NAA), while for shoot elongation, it was 0.5 mg L<sup>-1</sup> BA + 0.5 mg L<sup>-1</sup> kinetin (KIN) + 0.5 mg L<sup>-1</sup> GA<sub>3</sub> + 0.25 mg L<sup>-1</sup> NAA. Rooting was best promoted by 1 mg L<sup>-1</sup> NAA. This study provides valuable insights for the mass production of viroid-free propagation material in this new lemon x lime hybrid, contributing to the conservation of genetic resources in citrus breeding programs through the combined application of in vitro thermotherapy and an in vitro meristem tip culture, a novel and highlighted achievement reported for the first time in this study.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11430235/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clinical Evaluation of AMNIODERM+® Wound Dressing Containing Non-Viable Human Amniotic Membrane: Retrospective-Perspective Clinical Trial. 含有无菌人羊膜的 AMNIODERM+® 伤口敷料的临床评估:回顾性-前瞻性临床试验。
IF 2.7
BioTech Pub Date : 2024-09-19 DOI: 10.3390/biotech13030036
Iveta Schmiedova, Petr Slama, Alena Dembickaja, Beata Kozova, Vendula Hyneckova, Sona Gogolkova, Elen Stastna, Michal Zahradnicek, Stefan Savic, Arash Davani, Edward Hulo, Emil Martinka
{"title":"Clinical Evaluation of AMNIODERM+<sup>®</sup> Wound Dressing Containing Non-Viable Human Amniotic Membrane: Retrospective-Perspective Clinical Trial.","authors":"Iveta Schmiedova, Petr Slama, Alena Dembickaja, Beata Kozova, Vendula Hyneckova, Sona Gogolkova, Elen Stastna, Michal Zahradnicek, Stefan Savic, Arash Davani, Edward Hulo, Emil Martinka","doi":"10.3390/biotech13030036","DOIUrl":"10.3390/biotech13030036","url":null,"abstract":"<p><p>Chronic wounds result from the body's inability to heal, causing pain, pathogen entry, limited treatment options, and societal burden. Diabetic foot ulcers are particularly challenging, often leading to severe complications like leg amputation. A clinical study tested AMNIODERM+<sup>®</sup>, a new device with a lyophilized human amniotic membrane (HAM), on chronic diabetic foot ulcers. Participants had diabetic neuropathic or neuroischemic leg wounds (2-16 cm<sup>2</sup>) unhealed by 20% after six weeks of standard care. This study showed significant wound healing improvements with AMNIODERM+<sup>®</sup>. The median wound size reduction after 12 weeks was 95.5%, far exceeding the null hypothesis of 20% change. Additionally, 65% of patients achieved complete ulceration healing, surpassing the 50% efficacy requirement. The median time to full closure was 11.4 weeks, with the proportion of completely healed patients rising progressively, reaching 55% by week 11. These findings, from the clinical trial \"Freeze-dried amniotic membrane in the treatment of nonhealing wounds\", suggest AMNIODERM+<sup>®</sup> as a promising future treatment for chronic diabetic foot ulcers. The published results were obtained as part of a clinical trial entitled \"Freeze-dried amniotic membrane in the treatment of nonhealing wounds: a single-arm, retrospectively-perspective clinical trial\", EUDAMED Nr. CIV-SK-22-10-041146.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11417787/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142297150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simultaneous Production of Biogas and Electricity from Anaerobic Digestion of Pine Needles: Sustainable Energy and Waste Management. 松针厌氧消化同时产生沼气和电力:可持续能源与废物管理。
IF 2.7
BioTech Pub Date : 2024-09-05 DOI: 10.3390/biotech13030035
Deepak Sharma, Rishi Mahajan, Vikas Baghel, Saurabh Bansal, Vishal Ahuja, Gunjan Goel
{"title":"Simultaneous Production of Biogas and Electricity from Anaerobic Digestion of Pine Needles: Sustainable Energy and Waste Management.","authors":"Deepak Sharma, Rishi Mahajan, Vikas Baghel, Saurabh Bansal, Vishal Ahuja, Gunjan Goel","doi":"10.3390/biotech13030035","DOIUrl":"10.3390/biotech13030035","url":null,"abstract":"<p><p>Power scarcity and pollution can be overcome with the use of green energy forms like ethanol, biogas, electricity, hydrogen, etc., especially energy produced from renewable and industrial feedstocks. In hilly areas, pine needles are the most abundant biomass that has a low possibility of valorization due to high lignin content. On the other hand, anaerobic digestion (AD) of lignin and animal waste has low biogas yield due to poor conductivity. This study focuses on the simultaneous production of biogas and electricity through the co-digestion of cow dung and pine needles. The digester was initially established and stabilized in the lab to ensure a continuous supply of inoculum throughout the experiment. The optimization process involved the determination of an ideal cow dung-to-water ratio and selecting the appropriate conductive material that can enhance the energy generation from the feedstock. Afterward, both batch and continuous anaerobic digestion experiments were conducted. The results revealed that the addition of powdered graphite (5 mM), activated charcoal (15 mM), and biochar (25 mM) exhibited maximum voltage of 0.71 ± 0.013 V, 0.56 ± 0.013 V, and 0.49 ± 0.011 V on the 30th, 25th and 20th day of AD, respectively. The batch experiment showed that 5 mM graphite powder enhanced electron transfer in the AD process and generated a voltage of 0.77 ± 0.014 V on the 30th day, indicating an increase of ~1.5-fold as compared to the control (0.56 ± 0.019 V). The results from the continuous AD process showed that the digester with cow dung, pine needle, and a conductive material in combination exhibited the maximum voltage of 0.76 ± 0.012 V on the 21st day of AD, while the digester with cow dung only exhibited a maximum voltage of 0.62 ± 0.015 V on the 22nd day of AD, representing a 1.3-fold increase over the control. Furthermore, the current work used discarded plastic items and electrodes from spent batteries to emphasize waste management and aid in attaining sustainable energy and development goals.</p>","PeriodicalId":34490,"journal":{"name":"BioTech","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11417778/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142297153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Data Management in Biobanking: Strategies, Challenges, and Future Directions. 生物库数据管理:战略、挑战和未来方向。
IF 2.7
BioTech Pub Date : 2024-09-02 DOI: 10.3390/biotech13030034
Ramez Alkhatib, Karoline I Gaede
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