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2. Saccharomyces cerevisiae strains L7 contribute to flavor and deacidification in Suanyu, a Chinese traditional fermented fish

Author

Hu Wenkang, Liu Jingui, Ding Xuelu, Ren Yanjie, Liu Mingzhu, Shi Tingting, Tan Fuyao, and Zeng Xuefeng

Subjects
Nutrition. Foods and food supply, TX341-641, Food processing and manufacture, TP368-456
Abstract

Abstract Saccharomyces cerevisiae L7 was found to be an excellent starter and biological deacidification strain for Suanyu, however, the underlying mechanisms remain poorly understood. This study aimed to investigate the acid inhibition mechanism of S. cerevisiae L7. The strain enhances the sensory and flavor characteristics of Suanyu. The growth of Lactiplantibacillus plantarum is inhibited due to competition for carbon sources, resulting in a decrease in cell count from 9.00 Lg CFU/mL at 48 h to 7.70 Lg CFU/mL in co-culture. The addition of yeast reduces acidity, decreasing it from 5.83 g/kg to 0.82 g/kg at 48 h, while increasing sugar utilization to 94.52%. We found that cell contact was the main method of inhibition between the two microbials. Transcriptome analysis revealed that multiple pathways were affected under co-culture, ultimately leading to a decrease in lactic acid production. These findings provide valuable insights into the microbial interactions involved in biological deacidification.

Published
2024
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40. Blood miRNAs as Potential Diagnostic Biomarkers for Chronic Obstructive Pulmonary Disease: A Meta-Analysis

Author

Li,Xiaohua, Fu,Guoxia, Zhang,Chunrong, Wu,Yu, Guo,Hua, Li,Weiming, Zeng,Xuefeng, Li,Xiaohua, Fu,Guoxia, Zhang,Chunrong, Wu,Yu, Guo,Hua, Li,Weiming, and Zeng,Xuefeng

Abstract

Xiaohua Li,1,* Guoxia Fu,1,* Chunrong Zhang,1,* Yu Wu,2 Hua Guo,1 Weiming Li,1 Xuefeng Zeng1 1Department of Respiratory and Critical Care Medicine, Sixth People’s Hospital of Chengdu, Chengdu, Sichuan, 61005, People’s Republic of China; 2West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, People’s Republic of China*These authors contributed equally to this workCorrespondence: Weiming Li; Xuefeng Zeng, Department of Respiratory and Critical Care Medicine, Sixth People’s Hospital of Chengdu, No. 16 Jianshe South Street, Chengdu, Sichuan Province, 610051, People’s Republic of China, Email Lwming1989@163.com; ZXFeng1616@163.comPurpose: Investigate the efficacy of blood microRNAs (miRNAs) as diagnostic biomarkers for Chronic Obstructive Pulmonary Disease (COPD).Patients and Methods: We conducted a comprehensive search in English and Chinese databases, selecting studies based on predetermined criteria. Diagnostic parameters like summarized sensitivity (SSEN), summarized specificity (SSPE), summarized positive likelihood ratio (SPLR), summarized negative likelihood ratio (SNLR), and diagnostic odds ratio (DOR), and area under the curve (AUC) of the summary receiver operating characteristic (SROC) curves were analyzed using a bivariate model. Each parameter was accompanied by a 95% confidence interval (CI).Results: Eighteen high-quality studies were included. For diagnosing COPD with blood miRNAs, the SSEN was 0.83 (95% CI 0.76– 0.89), SSPE 0.76 (95% CI 0.70– 0.82), SPLR 3.50 (95% CI 2.66– 4.60), SNLR 0.22 (95% CI 0.15– 0.33), DOR 15.72 (95% CI 8.58– 28.77), and AUC 0.86 (95% CI 0.82– 0.88). In acute exacerbations, SSEN was 0.85 (95% CI 0.76– 0.91), SSPE 0.80 (95% CI 0.73– 0.86), SPLR 4.26 (95% CI 3.05– 5.95), SNLR 0.19 (95% CI 0.12– 0.30), DOR 22.29 (95% CI 11.47– 43.33), and AUC 0.89 (95% CI 0.86– 0.91).Conclusion: Blood miRNAs demonstrate significant accuracy i

Published
2024

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