Article
Biotechnology & Applied Microbiology
Ganesh Swain, R. K. Sonwani, R. S. Singh, Ravi P. Jaiswal, B. N. Rai
Summary: In this study, a sponge-modified carrier, polypropylene-polyurethane foam (PP-PUF), was used in MBBR and PBBR for the biodegradation of 4-CP. Under identical conditions, MBBR showed higher removal efficiencies for 4-CP and COD due to the higher growth of biomass.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Biotechnology & Applied Microbiology
Caroline Lopes Perez, Fernanda Perpetua Casciatori, Joao Claudio Thomeo
Summary: The research focused on improving enzyme production through solid-state cultivation using a mixture of sugarcane bagasse and wheat bran to grow Myceliophthora thermophila I-1D3b fungus. Results showed higher enzyme activities in the most porous medium, and using an inner tube for air supply in the pilot-scale bioreactor resulted in more homogeneous and active enzyme production. These findings will be beneficial for scaling up this bioreactor for industrial applications.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2021)
Article
Engineering, Environmental
Natalia A. Rodrigues, Eric T. Katayama, Fernanda P. Casciatori
Summary: This study evaluated alternative modes of operation for a multilayer packed-bed bioreactor (PBB) in solid-state cultivation (SSC) processes, and found that continuous operation is feasible and advantageous, contributing to the operational versatility and scale-up of PBBs in the industrial advancement of SSC.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Agricultural Engineering
Periyasamy Sivagurunathan, Prakash C. Sahoo, Manoj Kumar, Ravi Prakash Gupta, Debasis Bhattacharyya, S. S. V. Ramakumar
Summary: The positive interaction between Clostridium sp. and lactic acid-producing bacteria is commonly observed in high-rate hydrogen production systems. However, the role of Lactobacillus sp. in dark fermentation production systems has been rarely studied. This study demonstrated, for the first time, the biohydrogen production ability of Lactobacillus delbrueckii under anaerobic conditions. By optimizing pH at 6.5 and adding nanoparticles, the maximum hydrogen yield was increased by 18% compared to the control, supported by the external electron transfer mechanism.
BIORESOURCE TECHNOLOGY
(2023)
Article
Food Science & Technology
Katarzyna Petka, Pawel Sroka, Tomasz Tarko, Aleksandra Duda-Chodak
Summary: Under specific conditions, Lactobacillus acidophilus LA-5 has the ability to degrade acrylamide, but this capability disappears under certain conditions. Additionally, the presence of acrylamide in milk can modulate the bacteria metabolism.
Article
Neurosciences
Joshua P. Olorocisimo, Leomir A. Diaz, Daniel E. Co, Harold M. Carag, Joyce A. Ibana, Michael C. Velarde
Summary: Certain bacteria called psychobiotics have the ability to reduce anxiety and stress-related behaviors through the gut microbiome-brain axis. This study analyzed three species of Lactobacillacea family, finding that L. delbrueckii could reduce anxiety-like behavior in zebrafish and increase the expression of a specific gene in the brain and gut. The study also showed that L. delbrueckii altered the zebrafish gut microbial community.
Article
Biochemistry & Molecular Biology
Mariano Elean, Leonardo Albarracin, Julio Villena, Haruki Kitazawa, Lucila Saavedra, Elvira M. Hebert
Summary: A comprehensive genomic analysis of L. delbrueckii strains was conducted, focusing on the proteolytic system and the key enzyme, cell envelope-associated proteinase (CEP). The study compared amino acid sequences and protein structures of CEPs, as well as analyzed syntenic and genomic variations among different strains. Investigation of CEP promoter region and regulatory elements provided insights into the control of proteolytic activity in lactobacilli. This study contributes to our understanding of proteolytic activity and potential applications of L. delbrueckii in the dairy industry.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Food Science & Technology
Melinda Pazmandi, Zoltan Kovacs, Anna Maraz
Summary: This study assessed the potential of using lactic acid bacteria for depleting non-GOS sugars from a crude GOS mixture, aiming to combine the prebiotic characteristics of purified GOS with the health-promoting effects of lactic acid fermentation metabolites. Supplementation of crude GOS with casein hydrolysate and retardation of acidification during fermentation stimulated cell growth, mono- and disaccharide consumption, overall organic acid production and diversity of the produced acids. Fermentation by specific strains resulted in the production of high purity GOS media.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Eri Yamamoto, Reiko Watanabe, Emi Tooyama, Katsunori Kimura
Summary: This study found that fumaric acid produced by Streptococcus thermophilus can serve as a symbiotic agent to stimulate the growth of Lactobacillus delbrueckii ssp. bulgaricus during yogurt fermentation, resulting in a shorter fermentation time.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Food Science & Technology
Fan -Bing Meng, Yu -Ting Lei, Qing-Zhou Li, Yun-Cheng Li, Yun Deng, Da -Yu Liu
Summary: This study found that fermentation by two lactic acid bacteria strains, L. plantarum and L. acidophilus, significantly improved the antioxidant activity of loquat juice. Metabolomics analysis revealed different metabolites profiles between the two strains, with lipids, organic acids, amino acids, and phenolic compounds playing important roles in the flavor reconstruction and functional improvement of loquat juices.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Nutrition & Dietetics
Jie Yang, Yue Sun, Tengqi Gao, Yue Wu, Hao Sun, Qingzheng Zhu, Chunsheng Liu, Chuang Zhou, Yongbin Han, Yang Tao
Summary: This study shows that lactic acid bacteria can effectively ferment apple juice, resulting in increased viable cell counts, lactic acid content, and improved antioxidant and antibacterial capacities. After storage, the fermented apple juice still retains its antibacterial and in vitro antioxidant activities.
FRONTIERS IN NUTRITION
(2022)
Article
Multidisciplinary Sciences
Archibold G. Bakare, Titus J. Zindove, Arti Bhavna, Ashika Devi, Sereana L. Takayawa, Ami C. Sharma, Paul A. Iji
Summary: In developing countries with limited feed resources, processing cassava leaves through ensiling and additives can improve their physicochemical properties for use as animal feed.
Article
Biotechnology & Applied Microbiology
Paola Monteiro de Oliveira, Larissa Provasi Santos, Luciana Fontes Coelho, Paulo Marcelo Avila Neto, Daiane Cristina Sass, Jonas Contiero
Summary: This study focuses on obtaining L(+)-lactic acid from sucrose using Lactobacillus casei Ke11 strain through different feeding strategies, which increases lactic acid production and productivity, while avoiding cellular stress caused by high osmotic pressure. The purification of the acid using charcoal and celite, followed by a cation exchange column, proved to be highly efficient, allowing for a high yield of lactic acid and removal of sugars and proteins. This study shows potential for large-scale fermentation of L. casei Ke11 for production of l-lactic acid.
FERMENTATION-BASEL
(2021)
Article
Food Science & Technology
Wanjing Lai, Rui Cai, Kang Yang, Tianli Yue, Zhenpeng Gao, Yahong Yuan, Zhouli Wang
Summary: This study aimed to screen probiotic strains for effective patulin control during juice fermentation. Among the six LAB strains tested, Lactobacillus pentosus (DSM 20314) showed the highest efficiency in removing patulin in apple juice, detoxifying 53.14% of the mycotoxin within 24 hours. The results indicate the potential of these probiotic strains in controlling patulin during apple juice fermentation and digestion.
Article
Agricultural Engineering
Kalpana Singh, Satish Kumar Ainala, Sunghoon Park
Summary: This study focused on the production of 1,3-propanediol (1,3-PDO) by Lactobacillus reuteri from glycerol, by disrupting alcohol dehydrogenases (ADH) and overexpressing 1,3-PDO oxidoreductases (PDOR) to improve yield and rate of 1,3-PDO production.
BIORESOURCE TECHNOLOGY
(2021)