Letters in Applied Microbiology最新文献_第6页

Screening of multifunctional PGPB from the Qinghai-Tibet Plateau and their effects on tomato growth and quality. 青藏高原多功能PGPB的筛选及其对番茄生长和品质的影响

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag036

Guoyun Yi, Rong Wang, Juan Li, Guigong Geng, Liang Cheng

{"title":"Screening of multifunctional PGPB from the Qinghai-Tibet Plateau and their effects on tomato growth and quality.","authors":"Guoyun Yi, Rong Wang, Juan Li, Guigong Geng, Liang Cheng","doi":"10.1093/lambio/ovag036","DOIUrl":"10.1093/lambio/ovag036","url":null,"abstract":"The identification of indigenous plant growth-promoting bacteria (PGPB) from the Qinghai-Tibet Plateau is vital for developing region-specific microbial inoculants to improve crop productivity in high-altitude agricultural ecosystems. The solubilizing strains were isolated from faba bean leaves and roots collected in alpine farmlands of Qinghai using selective media. Following this, multifunctional PGPB with plant growth-promoting traits and biocontrol activities were identified. Selected PGPB strains were introduced into the rhizosphere of tomato plants to assess their impact on growth promotion. Results revealed that strain H18 displayed nitrogen fixation, phosphorus and potassium solubilization, IAA production, and ACC deaminase activity. Additionally, it also exhibited antagonistic effects against eight fungal plant pathogens. Physiological and molecular analyses identified strain H18 belongs as Bacillus atrophaeus. This strain significantly improved tomato seed germination and enhanced growth during seedling and flowering stages, including parameters such as plant height, crown width, and stem diameter. Furthermore, during the fruiting stage, it increased yield and improved fruit quality. In conclusion, strain H18 is a multifunctional PGPB with excellent biocontrol and growth-promoting effects.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147513095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of the redox potential during the fermentation of model wine solutions by Saccharomyces cerevisiae. 酿酒酵母菌模型酒发酵过程中氧化还原电位的表征。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag039

Kohei Sasaki, Ayumi Abe, Teruo Sone

{"title":"Characterization of the redox potential during the fermentation of model wine solutions by Saccharomyces cerevisiae.","authors":"Kohei Sasaki, Ayumi Abe, Teruo Sone","doi":"10.1093/lambio/ovag039","DOIUrl":"10.1093/lambio/ovag039","url":null,"abstract":"In winemaking, the main causes of incomplete fermentation are unfavorable chemical conditions such as inappropriate pH, extreme temperature, or a shortage of nutrients. Alternatively, in spontaneous fermentation, where yeasts with sufficient fermentative capacity in the must can be scarce or absent, it is difficult to detect early signs of stuck or sluggish fermentation. Although the redox potential (ORP) is known to affect yeast metabolism during fermentation, few studies have examined the relationship between ORP behavior and fermentation dynamics across strains of Saccharomyces cerevisiae. In this study, ORP dynamics were investigated in 22 S. cerevisiae strains, including both commercial and wild-type strains. The ORP profiles varied considerably among the yeast strains, with some exhibiting a typical bathtub-shaped pattern and others showing an earlier ORP increase during the late stage or fluctuating trends. Statistical analysis of the ORP characteristics at each stage of fermentation showed significant differences among the groups classified by fermentation time and residual sugar. These results may suggest that changes in ORP during fermentation can reflect fermentation faults such as arrested fermentation.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147581758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anti-obesity effects of probiotics beyond BMI: a critical review of human clinical trials. 超越BMI的益生菌抗肥胖作用：对人体临床试验的重要回顾。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag041

Hewa Athapaththuge Duvini Athapaththu, Gargi Dey

{"title":"Anti-obesity effects of probiotics beyond BMI: a critical review of human clinical trials.","authors":"Hewa Athapaththuge Duvini Athapaththu, Gargi Dey","doi":"10.1093/lambio/ovag041","DOIUrl":"10.1093/lambio/ovag041","url":null,"abstract":"The increasing prevalence of obesity worldwide has highlighted the need for adjunct strategies targeting metabolic dysfunction beyond simple weight reduction. This review aimed to evaluate the hypothesis that the anti-obesity effects of probiotics are mediated through modifications in fat distribution, metabolic inflammation, and appetite regulation rather than reductions in body weight or body mass index (BMI). A critical appraisal of recent randomized, double-blind, placebo-controlled human clinical trials was conducted, focusing on the effects of probiotic supplementation on adiposity, fat distribution, metabolic parameters, and eating behaviors. The evidence indicates that probiotic strains, particularly Lactobacillus gasseri and Bifidobacterium breve, are consistently associated with reductions in visceral fat, total body fat, waist circumference (WC), and body fat percentage, while effects on body weight and BMI remain modest. Strains of Lacticaseibacillus rhamnosus showed improvements in satiety. Probiotic supplementation with B. breve, B. pseudocatenulatum, L. plantarum Inducia were also linked to improvements in lipid metabolism, glucose homeostasis, inflammatory markers, and appetite regulation. Notably, several studies reported more pronounced effects in female participants. Overall, these findings suggest that probiotics exert anti-obesity effects primarily through metabolic and compositional changes rather than direct weight loss, supporting their role as a complementary strategy in obesity management.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147593044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifunctional bio-preservative potential of Lactobacillus plantarum postbiotics: thermal stability and efficacy in food models. 植物乳杆菌生后制剂的多功能生物防腐潜力：食品模型的热稳定性和功效。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag042

Xiao-Lin Li, Yue-Ying Huang, Miao-Ting Li, An-Qi Shen, Qiong-Qiong Yang, Peter C K Cheung, Bo-Bo Zhang

{"title":"Multifunctional bio-preservative potential of Lactobacillus plantarum postbiotics: thermal stability and efficacy in food models.","authors":"Xiao-Lin Li, Yue-Ying Huang, Miao-Ting Li, An-Qi Shen, Qiong-Qiong Yang, Peter C K Cheung, Bo-Bo Zhang","doi":"10.1093/lambio/ovag042","DOIUrl":"10.1093/lambio/ovag042","url":null,"abstract":"Rising health concerns over synthetic food additives have boosted demand for natural alternatives. While probiotics are known to inhibit various common food spoilage bacteria, their metabolites and inactivated cells, collectively defined as postbiotics, offer superior stability and safety. This study assessed the effectiveness of postbiotics in food preservation, focusing on environmental stress tolerance, stability, and functional traits, specifically antioxidant and antibacterial capacities. Using Lactobacillus plantarum 299 V as a model, we analyzed the antibacterial activity and stability of its postbiotics under varying thermal and pH conditions, as well as in a simulated gastrointestinal environment. Additionally, we investigated the correlation between fermentation duration and antioxidant capacity. Results indicated that postbiotics retained significant antibacterial activity after high-temperature treatment (121°C, 30 minutes) and demonstrated notable stability under gastrointestinal conditions. Significantly, postbiotics displayed consistent enhancement in total antioxidant capacity over time under various storage temperatures. Antioxidant activity peaked at 16 h of fermentation, while antibacterial effects declined at pH levels above 5. Practically, they completely inhibited Staphylococcus aureus in milk. Moreover, when incorporated with the postbiotics, edible films incorporated with them showed potent antioxidant activity, effectively preserving bananas and pork. These postbiotics serve as stable, effective bio-preservatives, providing a natural, sustainable solution for food preservation.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147674717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Immunomodulatory effects of Lactiplantibacillus paraplantarum BAL-28-ITTG paraprobiotics and postbiotics. 副植物乳杆菌BAL-28-ITTG副益生菌和后益生菌的免疫调节作用。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag033

Aurora Anahí Ocampo-Zaragoza, Alicia Grajales-Lagunes, Sandy Luz Ovando-Chacón, María Celina Luján-Hidalgo, Victor Manuel Ruíz-Valdiviezo, Miguel Angel Ruiz-Cabrera, Luz Eugenia Alcántara-Quintana, Miguel Abud-Archila

{"title":"Immunomodulatory effects of Lactiplantibacillus paraplantarum BAL-28-ITTG paraprobiotics and postbiotics.","authors":"Aurora Anahí Ocampo-Zaragoza, Alicia Grajales-Lagunes, Sandy Luz Ovando-Chacón, María Celina Luján-Hidalgo, Victor Manuel Ruíz-Valdiviezo, Miguel Angel Ruiz-Cabrera, Luz Eugenia Alcántara-Quintana, Miguel Abud-Archila","doi":"10.1093/lambio/ovag033","DOIUrl":"10.1093/lambio/ovag033","url":null,"abstract":"Intracellular paraprobiotics (PP) and postbiotics (PB) derived from lactic acid bacteria are being increasingly explored as alternatives to conventional probiotics. We examined the immunomodulatory effects of PP and PB obtained from Lactiplantibacillus paraplantarum BAL-28-ITTG using human intestinal epithelial cell (HIEC-6) and dendritic cell (NHDC) lines. PP and PB were obtained by thermal and thermal-sonication treatments and characterized by scanning electron microscopy, fatty acid profiling (Gas Chromatography - Mass Spectrometry (GC-MS)), and Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS‒PAGE). Cellular responses were assessed through metabolic activity (MTT), catalase/caspase activity, and multiplex cytokine quantification. Statistical analyses were performed using Analysis of Variance (ANOVA) and appropriate post hoc tests. PP and PB did not induce cytotoxic effects in HIEC-6 or NHDC cells. PP treatment increased cellular metabolic activity in a dose-dependent manner and modulated the secretion of cytokines, particularly IL-1β, IL-4, IL-6, IL-10, and TNF-α. Interestingly, PP-2 enhanced cytokine production under basal conditions while attenuating cytokine responses in lipopolysaccharide-stimulated cultures. These findings demonstrate that BAL-28-ITTG-derived PP and PB modulate cytokine responses in human intestinal and immune cell models in vitro, warranting further investigation to determine their biological relevance in vivo.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147434142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ciprofloxacin-functionalized silver nanocomposite: a promising strategy against colistin-resistant Pseudomonas aeruginosa. 环丙沙星功能化银纳米复合材料：抗耐粘菌素铜绿假单胞菌的有希望的策略。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag027

Sameera Mujahid, Samiya Farooq, Absar Talat, Jawed Iqbal, Kafil Akhtar, Asad U Khan

{"title":"Ciprofloxacin-functionalized silver nanocomposite: a promising strategy against colistin-resistant Pseudomonas aeruginosa.","authors":"Sameera Mujahid, Samiya Farooq, Absar Talat, Jawed Iqbal, Kafil Akhtar, Asad U Khan","doi":"10.1093/lambio/ovag027","DOIUrl":"10.1093/lambio/ovag027","url":null,"abstract":"The rapid rise of colistin resistance in Pseudomonas aeruginosa presents a critical challenge, necessitating innovative therapeutic alternatives. In this study, we developed a novel ciprofloxacin-functionalized silver nanocomposite (NC) by modifying phospholipid-PEG (polyethylene glycol)-coated silver nanoparticles to enhance antibacterial efficacy against colistin-resistant P. aeruginosa. The NC was comprehensively characterized by UV-Visible spectroscopy, dynamic light scattering, Fourier transform infrared spectroscopy, transmission electron microscope, scanning electron microscopy, and EDX, confirming spherical morphology with an average size of 29.74 nm. Biological evaluations revealed potent antibacterial and antibiofilm activity: CFU (colony forming unit) and crystal violet assays demonstrated a 6.9 log₁₀ CFU mL-1 reduction in bacterial colonies and a 31.45% decrease in biofilm formation. Mechanistic studies revealed an elevated production of reactive oxygen species, singlet oxygen, and hydroxyl radicals upon treatment, correlating with a 39.70% decline in bacterial viability in XTT assays. Importantly, methyl thiazolyl tetrazolium cytotoxicity tests against MLE12 cells confirmed the NC's biocompatibility. Efficacy was further validated in an in vivo lung infection model in albino Wistar rats, where histopathological analysis and cytokine profiling confirmed therapeutic potential. Collectively, these findings establish ciprofloxacin-modified silver NCs as a stable, safe, and highly effective strategy for treating multidrug-resistant P. aeruginosa, offering a promising alternative to colistin in combating life-threatening lung infections.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147645754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Naproxen and ampicillin degradation by the Ascomycota fungi Penicillium and Aspergillus. 子囊菌属真菌青霉菌和曲霉降解萘普生和氨苄西林的研究。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag040

Mailyn S Porras-Garcia, Alma D Paz-González, Ana V Martínez-Vázquez, Timoteo Delgado-Maldonado, Eyra Ortiz-Pérez, Gildardo Rivera

{"title":"Naproxen and ampicillin degradation by the Ascomycota fungi Penicillium and Aspergillus.","authors":"Mailyn S Porras-Garcia, Alma D Paz-González, Ana V Martínez-Vázquez, Timoteo Delgado-Maldonado, Eyra Ortiz-Pérez, Gildardo Rivera","doi":"10.1093/lambio/ovag040","DOIUrl":"10.1093/lambio/ovag040","url":null,"abstract":"The global population has increased the use of pharmaceutical compounds, emerging as contaminants. Due to their persistence in the environment, pharmaceutical residues have been detected in water and soil sources, causing adverse effects on ecosystems. Therefore, methods and techniques are necessary to degrade this pollution. An environmentally sustainable option is fungal remediation, which can decompose or degrade various xenobiotics. In this study, 30 phenanthrene-tolerant fungal isolates were analyzed to determine their potential for pharmaceutical degradation. Nine isolates were tolerant to 100 mg L-1 and three to 200 mg L-1 of naproxen and ampicillin. An enzyme activity analysis detected the production of laccase and manganese peroxidase. Penicillium crustosum H10 causes a high degradation of naproxen 95 % at 5 mg L-1 in 7 days and 100 % at 50 mg L-1 in 15 days and a low degradation of ampicillin (11.15% at 5 mg L-1). These results encourage exploring P. crustosum H10 as a viable alternative for the elimination of non-steroidal anti-inflammatory drugs.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147674679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of allyl isothiocyanate vapor on Salmonella enterica inactivation and quality characteristics of blueberries. 异硫氰酸烯丙酯蒸气对蓝莓肠沙门氏菌灭活及品质特性的影响。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag032

Eungyeong Kim, Huyong Lee, In Hee Cho, Jee-Hoon Ryu, Hoikyung Kim

{"title":"Effects of allyl isothiocyanate vapor on Salmonella enterica inactivation and quality characteristics of blueberries.","authors":"Eungyeong Kim, Huyong Lee, In Hee Cho, Jee-Hoon Ryu, Hoikyung Kim","doi":"10.1093/lambio/ovag032","DOIUrl":"10.1093/lambio/ovag032","url":null,"abstract":"This study examined the antimicrobial efficacy of allyl isothiocyanate (AITC) vapor against three Salmonella enterica serotypes (Salmonella Agona, Salmonella Cubana, and Salmonella Newport) on blueberries and assessed their effects on fruit quality. AITC vapors were generated from 300, 600, and 900 µl ml-1 solutions and applied at 12°C or 25°C. At 25°C, Population of S. Agona and S. Cubana were reduced to below the detection limit within 10 and 8 h, respectively, at all concentrations, while S. Newport required exposure of 900 µl ml-1 vapor for over 6 h to achieve a similar reduction. Antimicrobial activity increased with temperature, concentration, and exposure time. Quality analysis showed no significant change in L* and a* values, but b* values decreased after treatment at 25°C for more than 10 h, indicating enhanced blue intensity. Hardness of fruit decreased faster at 25°C than at 12°C, suggesting temperature-dependent softening. Sensory evaluation revealed no major differences in color or odor except for odor at the highest concentration, but texture changed significantly. These findings suggest that AITC vapor can effectively control Salmonella on blueberries while treatment conditions require optimization to maintain fruit quality.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147444227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cyclic lipopeptides from Bacillus velezensis differentially affect spore germination and cell membranes in fungal plant pathogens. 来自velezensis芽孢杆菌的环状脂肽对真菌植物病原体孢子萌发和细胞膜的影响存在差异。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag035

Hannah Schott, Irina Popescu, Caitlin Kehoe, Marie Ouangni, Erika Wareberg, Tyler J Avis

{"title":"Cyclic lipopeptides from Bacillus velezensis differentially affect spore germination and cell membranes in fungal plant pathogens.","authors":"Hannah Schott, Irina Popescu, Caitlin Kehoe, Marie Ouangni, Erika Wareberg, Tyler J Avis","doi":"10.1093/lambio/ovag035","DOIUrl":"10.1093/lambio/ovag035","url":null,"abstract":"This study investigated the antifungal and mechanistic activity of two Bacillus velezensis strains against the mycelial and spore morphologies of the plant pathogens Alternaria solani (tomato/potato early blight), Cladosporium cucumerinum (cucurbit scab), and Fusarium sambucinum (potato dry rot). The pathogens were tested against B. velezensis strains SHRb and SHRc and their secondary metabolites to evaluate their ability to suppress fungal growth. The effects of Bacillus cyclic lipopeptides on spore germination and membrane permeability were assessed and compared to the ability of B. velezensis SHRb and SHRc precipitates to alter spore membrane permeability. Confrontation assays and treatments with filtrates demonstrated that both strains inhibited mycelial growth of all three fungi by up to 52% and 79%, respectively. Conversely, the cyclic lipopeptides exhibited varying abilities to inhibit spore germination and increase membrane permeability (up to 7.8-fold over the control). The lipopeptide iturin was consistently the most inhibitory of spore germination for all fungi. Membrane permeability assays indicated that the mode of action of B. velezensis SHRb likely includes membrane disruption, while B. velezensis SHRc may act through alternative antimicrobial mechanisms. Spore germination was differentially sensitive when compared to mycelial growth, implying that specific lipopeptide effects may be distinct depending on morphological state.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147504529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Repurposing onion peel waste as a cost-effective and sustainable substrate for xanthan production. 利用洋葱皮废料作为成本效益和可持续的黄原胶生产基质。

IF 2 4区生物学

Letters in Applied Microbiology Pub Date : 2026-04-06 DOI: 10.1093/lambio/ovag038

Kriti Dutta, Rahul Dey, Rituparna Debnath, Sabrina Sultana Rahman, Biswa Prasun Chatterji

{"title":"Repurposing onion peel waste as a cost-effective and sustainable substrate for xanthan production.","authors":"Kriti Dutta, Rahul Dey, Rituparna Debnath, Sabrina Sultana Rahman, Biswa Prasun Chatterji","doi":"10.1093/lambio/ovag038","DOIUrl":"10.1093/lambio/ovag038","url":null,"abstract":"This study investigates the potential of onion peel waste as a sustainable and cost-effective alternative substrate for xanthan gum production using Xanthomonas campestris NCIM 2961. The results demonstrate that onion peel-based medium consistently produced higher xanthan gum yields compared to the standard medium, achieving a maximum yield of 5.21 g L-1 at optimal conditions (pH 7.0, 30°C, 100 rpm agitation, and a 48 h incubation period), without supplements or pretreatments. FT-IR confirmed the chemical identity and purity of xanthan gum derived from the onion peel-based medium, closely matching commercial food-grade xanthan gum. Utilizing onion peels as a carbon substrate can contribute to waste management in India, a major onion producer, generating tons of onion peel waste every year. This would also align with sustainable development and circular economic goals. However, large-scale production of xanthan gum may be challenging due to factors like variable peel composition, inhibitory compounds, microbial contaminants, and extraction limitations. Future efforts focused on refining pretreatment and purification techniques, engineering Xanthomonas strains for improved waste utilization, and optimizing fermentation conditions using response surface methodology could further boost production efficiency. These findings highlight the viability of onion peel waste as a standalone substrate for cost-effective and sustainable xanthan gum production.","PeriodicalId":17962,"journal":{"name":"Letters in Applied Microbiology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147513147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0