Article
Agriculture, Multidisciplinary
Matteo Pollon, Susana Rio Segade, Simone Giacosa, Riccardo Botto, Carlo Montanini, Luca Rolle
Summary: The study investigated the effects of chip size, toasting degree, and time of contact on the release of volatile compounds from Quercus alba (L.) chips during fermentation. The results showed that large-size chips favored the release of furfural and furfuryl alcohol, while small-size chips increased the concentration of cyclotene and maltol. Furthermore, the interaction between chip size and time of contact indicated that small-size chips were more sensitive to the increase in ethanol concentration for the extraction rate of certain compounds, leading to increased concentrations at the end of maceration.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Deyan Gao, Cong Wang, Hongmei Shi, Hongmin Liang
Summary: This study investigated the effects of reduced glutathione (GSH) on the non-volatile and volatile metabolites of Chardonnay wine during simulated oxidation. It identified the important metabolites of GSH in white wine storage. The results showed that lipids play a crucial role in the changes of non-volatile substances. This study provides theoretical support for the application of GSH in improving the oxidation stability of white wine.
FERMENTATION-BASEL
(2023)
Article
Food Science & Technology
Doris Delac Salopek, Ivana Horvat, Ana Hranilovic, Tomislav Plavsa, Sanja Radeka, Igor Paskovic, Igor Lukic
Summary: This study investigated the volatile aroma profiles produced by different non-Saccharomyces yeasts before sequential inoculation with Saccharomyces cerevisiae. The results showed significant differences in volatile profiles between non-Saccharomyces yeasts and S. cerevisiae. Torulaspora delbrueckii and M. pulcherrima produced compounds not commonly found in S. cerevisiae fermented wines.
Article
Microbiology
William T. Scott, Oscar van Mastrigt, David E. Block, Richard A. Notebaart, Eddy J. Smid
Summary: The study shows that genetic background and environmental conditions impact the production of volatile organic compounds by wine yeast during grape juice fermentation. Nitrogen utilization plays a crucial role in aroma production, and differences in aroma formation exist among different yeast strains.
MICROBIOLOGY SPECTRUM
(2021)
Article
Chemistry, Applied
Shiqi Liao, Jinlin Han, Chunyan Jiang, Binbin Zhou, Zhenju Jiang, Jie Tang, Wenwu Ding, Zhenming Che, Hongbin Lin
Summary: With the use of a thermostatic fermenter, this study identified and analyzed the physicochemical factors and volatile metabolites of fermented broad beans. Through the application of HS-SPME-GC x GC-MS, the volatile compounds in fermented broad beans were detected, and metabolomics was used to explore the physicochemical characteristics and analyze possible metabolic mechanisms. A total of 184 different metabolites were detected, and they were annotated to various metabolic pathways of carbohydrate and amino acid metabolism. This study provides references for improving the quality of tank-fermented broad beans and upgrading the Pixian broad bean paste industry.
Article
Food Science & Technology
Jinlin Fan, Zheng Xiao, Wanwei Qiu, Chao Zhao, Chao Yi, Dongmei Lin, Zhanxi Lin
Summary: This study used GC-QTOF-MS metabolomics and multivariate statistical analysis to investigate the dynamic changes of metabolites during the fermentation of JUNCAO wine. It identified key metabolic pathways and differential metabolites, providing a comprehensive overview of metabolite changes during fermentation.
Article
Agriculture, Multidisciplinary
Edouard Pelonnier-Magimel, Georgia Lytra, Celine Franc, Laura Farris, Philippe Darriet, Jean-Christophe Barbe
Summary: Red wines produced without the addition of any SO2 have become a new consumer trend. Research has shown that sensory differences exist between wines produced with and without the use of SO2. This study aims to further understand the aromatic characteristics of these wines and identifies methyl salicylate as a compound impacted by the use of SO2. The research also found that methyl salicylate is significantly higher in wines without added SO2 and has a significant impact on the fruity aromas and freshness of the wine.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Ines Le Mao, Jean Martin-Pernier, Charlyne Bautista, Soizic Lacampagne, Tristan Richard, Gregory Da Costa
Summary: In this study, H-1-NMR metabolomics combined with multivariate analysis was used to investigate the effects of grape maturity, enzyme, and fining treatments on Cabernet Sauvignon wines. The results demonstrated significant impacts of maturity stage, enzymes, and fining agents on a variety of wine metabolites.
Article
Food Science & Technology
Chunlei Tan, Liang Tao, Jing Xie, Zhijin Yu, Yang Tian, Cunchao Zhao
Summary: The volatile compounds of potato wine were analyzed using sensory omics techniques to understand its overall flavor characteristics and evaluate the effects of ultrasonic treatment and gamma irradiation therapy. The study identified 14 flavor compounds through GC-MS and determined isoamyl alcohol, ethyl octanoate, and 1,1-diethoxyethane as key aroma components through GC-O analysis. Additionally, 50 volatile substances were identified through GC-IMS. The alcohol content of the potato wine decreased while the esters content increased after irradiation and ultrasonic treatment. Sensory evaluation indicated improved fruity, Fen-flavor, and sweet notes, suggesting the theoretical support for the use of ultrasonic and irradiation therapy in potato wine and the overall aroma building of potato wine.
Article
Chemistry, Analytical
Karsten Seeger
Summary: A new sample preparation method was proposed to shorten the preparation time of NMR samples, suitable for different sample types. Experimental results showed that this extraction protocol combined with slice-selection NMR experiments can be successfully used for metabolic investigations.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Applied
Pakawat Sirilertpanich, Paweena Ekkaphan, Tushar Andriyas, Nisa Leksungnoen, Siriphat Ruengphayak, Apichart Vanavichit, Wanchai De-Eknamkul, Rossarin Tansawat
Summary: This study investigated the volatile components in Thai colored rice varieties cultivated in two agricultural locations and found that the volatile profiles differed between regions within the same country. The study also identified key aroma producers in each area and highlighted the environmental factors that can affect colored rice aroma.
Article
Biochemistry & Molecular Biology
Maria Marinaki, Thomai Mouskeftara, Panagiotis Arapitsas, Kyriaki G. Zinoviadou, Georgios Theodoridis
Summary: The aim of this study was to investigate the metabolomic changes during the fermentation of Muscat of Alexandria grape cultivars at the industrial level. Different analytical methods were used to analyze the compounds in wines from different producers, vintages, and fermentation time points. The majority of compounds showed an upward trend during fermentation, while fermentable sugars, amino acids, and C6 compounds decreased. Terpenes exhibited stable behavior, except for terpenols which increased initially and then decreased after the 5th day of fermentation.
Article
Food Science & Technology
Chenguang Zhou, Yaojie Zhou, Yuqian Hu, Bin Li, Roujia Zhang, Kaiyi Zheng, Jie Liu, Jing Wang, Min Zuo, Siyao Liu
Summary: The study found that germinated brown rice (GBR) from Japonica rice cultivars contained higher levels of health-promoting compounds compared to Indica rice cultivars. No clear differences in volatile profiles were observed between the subspecies, but all volatile organic compounds exhibited significant reductions after germination, suggesting that Japonica cultivars might be preferred for health-conscious consumers seeking GBR products.
Article
Chemistry, Applied
Alexandra A. Crook, Diana Zamora-Olivares, Fatema Bhinderwala, Jade Woods, Michelle Winkler, Sebastian Rivera, Cassandra E. Shannon, Holden R. Wagner, Deborah L. Zhuang, Jessica E. Lynch, Nathan R. Berryhill, Ron C. Runnebaum, Eric Anslyn, Robert Powers
Summary: The study evaluated three important wine parameters - vineyard, region, and vintage year - by analyzing 15 Pinot noir wines using NMR spectroscopy and a peptide-based sensing array. By combining these techniques, the genetically identical wines were classified based on distinctive metabolic signatures associated with their growth region, vineyard, and vintage year.
Article
Chemistry, Applied
Gavin Duley, Laurence Dujourdy, Susanne Klein, Anna Werwein, Christina Spartz, Regis D. Gougeon, Dennis K. Taylor
Summary: Wine quality and character are influenced by terroir, with metabolomic techniques like NMR and ICP-MS being useful for characterization and fraud detection. The study found that ICP-MS data is most useful for determining the regionality of wines from different terroirs.