Article
Biochemistry & Molecular Biology
Jiaman Liu, Yanbiao Chen, Xinxin Zhang, Jie Zheng, Weiying Hu, Bo Teng
Summary: This study found that tannins from hops can effectively inhibit the activity of tyrosinase, with whitening and antioxidant activities, making them suitable as whitening agents in the cosmetics industry.
Article
Ecology
Hai-Chao Zhou, Hui-Xing Kang, Jian Wei, Chang-Jun Gao, Muzammil Hussain, Yi-Jian Fu, Ming-Dang Li, Feng-Lan Li, Steven Jing-Liang Xu, Fred Wang-Fat Lee, Ming-Guo Jiang, Yi-Bing Wang, Xiao-Xia Chen, Nora Fung-Yee Tam, Tao Lang
Summary: This study examined the changes in tannin compounds during leaf litter leaching in four common mangrove species. The results showed that the fate of tannins varied among different plant species, but the dynamics were similar.
ECOLOGICAL PROCESSES
(2023)
Article
Horticulture
Kamal Tyagi, Itay Maoz, Or Lapidot, Bettina Kochanek, Yael Butnaro, Meir Shlisel, Larry Lerno, Susan E. Ebeler, Amnon Lichter
Summary: This study investigates the effects of gibberellin and cytokinin on the size and composition of grapes, as well as their subsequent impact on wine attributes. The results show that these plant growth regulators can increase berry diameter and weight, but also reduce sugar accumulation and color development. Furthermore, they affect the levels of flavan-3-ols, flavonols, anthocyanins, proanthocyanidins, and fatty acid derived volatile compounds in the berries, ultimately influencing the phenolic composition of the resulting wine.
SCIENTIA HORTICULTURAE
(2022)
Article
Biochemistry & Molecular Biology
Alejandro Gallardo, David Morcuende, Manuela Rodriguez-Romero, Maria Isabel Igeno, Fernando Pulido, Alberto Quesada
Summary: The research investigates the relationship between the chemical defenses of Quercus ilex leaves and their susceptibility to herbivory, with a focus on the QiMYB-like-1 D165H polymorphism. The study finds that tree clustering based on ecological and genetic factors affects the herbivory index and accumulation of condensed tannins, and demonstrates that condensed tannins may protect Q. ilex from defoliation in Mediterranean ecosystems.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Nga Yi Tsang, Wan-Fei Li, Elizabeth Varhegyi, Lijun Rong, Hong-Jie Zhang
Summary: This study identified a plant, Maesa perlarius, as an anti-Ebola virus candidate. The stem methanol extract of this plant showed inhibitory effects against Ebola-virus-pseudotyped particles (EBOVpp) and infectious Ebola virus. Further investigation led to the identification of a compound (1) as the most potent inhibitor against pseudovirion-bearing EBOV-GP.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Analytical
Emad F. Newair, Mohamed Khairy
Summary: This study presents the quantification of proanthocyanidins (PAs) isolated from grapevine using disposable screen-printed carbon electrodes (SPCE). Procyanidin B2 (B2) was used to investigate the electrochemical characteristics of complex PAs structures. The results showed that SPCE is a reliable method for analyzing PAs in grapevine samples, with consistent results compared to the traditional Folin-Ciocalteu standard method.
Article
Agricultural Engineering
Warren J. Grigsby, Charles MacIntosh
Summary: Novel thermoset tannin-based oxazolidine materials were synthesized by a one pot reaction, which can be combined with wood fibers to form composite materials with high temperature mechanical properties.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Biochemistry & Molecular Biology
You Jin Lim, Seok Hyun Eom
Summary: The changes in antioxidant activities during the thermal-drying processing of astringent persimmon fruit were investigated. The antioxidant activities of the flesh decreased in a temperature-dependent manner, while those of the peel increased due to the increase in total phenolics and hydrolysable tannins.
Article
Food Science & Technology
Pilar Espitia-Hernandez, Xochitl Ruelas-Chacon, Monica L. Chavez-Gonzalez, Juan A. Ascacio-Valdes, Antonio Flores-Naveda, Leonardo Sepulveda-Torre
Summary: Solid-state fermentation (SSF) can extract tannins from sorghum and release phenolic compounds as antioxidants, thereby improving the nutritional value and antioxidant activity of sorghum.
Article
Agriculture, Dairy & Animal Science
Wencan Ke, Huan Zhang, Shengnan Li, Yanlin Xue, Yan Wang, Wencheng Dong, Yimin Cai, Guijie Zhang
Summary: This study evaluated the effects of hydrolysable tannin (HT) and condensed tannin (CT) on the bacterial community, fermentation quality, and proteolysis of alfalfa silage. Both HT and CT were able to reduce proteolysis in alfalfa silage, but their effects on the bacterial communities differed.
Article
Microbiology
Johanna Witzell, Vicki Huizu Guo Decker, Marta Agostinelli, Carmen Romeralo, Michelle Cleary, Benedicte Riber Albrectsen
Summary: Nitrogen fertilization can alter the chemical status of aspen leaves but does not significantly impact endophytic fungal diversity. Beetle herbivores do not have a strong effect on the fungal community.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Plant Sciences
Maria Valeria Ricco, Martin Leon Bari, Alejandra Vanina Catalano, Paula Lopez, Cecilia Beatriz Dobrecky, Sergio Adrian Teves, Ariana Posadaz, Melina Laguia Becher, Rafael Alejandro Ricco, Marcelo Luis Wagner, Maria Alejandra Alvarez
Summary: The polyphenolic content of Ligaria cuneifolia varies during different developmental stages, and there are differences between in vitro cultures and organs of wild plants. Various cultivation conditions have significant effects on the growth and polyphenolic accumulation of calli. Antioxidant activity was detected in all samples, but in vitro cultures exhibited lower activity levels.
Article
Veterinary Sciences
Marco Battelli, Stefania Colombini, Pietro Parma, Gianluca Galassi, Gianni Matteo Crovetto, Mauro Spanghero, Davide Pravettoni, Sergio Aurelio Zanzani, Maria Teresa Manfredi, Luca Rapetti
Summary: Both condensed and hydrolysable tannins have been found to reduce enteric CH4 production in ruminants, but the precise mechanism of action is not fully understood. In this in vitro study, both types of tannins significantly reduced gas and CH4 production, which was primarily attributed to the reduction in digestibility. There was a low direct effect of tannins on rumen microorganisms, but certain bacterial communities showed correlations with tannin inclusion.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Wei Wang, Amlan Kumar Patra, Ryszard Puchala, Luana Ribeiro, Terry Allen Gipson, Arthur Louis Goetsch
Summary: This study investigated the effects of feeding condensed tannin-containing Sericea lespedeza hay on feed intake, digestion, growth performance, energy metabolism, and ruminal fermentation and methane emission in ruminants. The results showed that increasing the concentration of lespedeza in the diet decreased the digestion of fiber and nitrogen, resulting in reduced growth performance. However, the dietary concentration of lespedeza did not affect methane emission in goats or sheep. This suggests that feeding lespedeza has important effects on nitrogen digestion and growth performance in ruminants, but does not decrease methane emission. Further research is needed.
Article
Chemistry, Applied
Kosei Yamauchi, Mayu Soyano, Miho Kobayashi, Yuji O. Kamatari, Tohru Mitsunaga
Summary: This study aimed to elucidate the detailed binding mode of tannin and protein using the 1H-15N HSQC NMR method with 15N-labeled MMP-1. The results showed cross-link sites between MMP-1s caused by tannins, leading to protein aggregation and inhibition of MMP-1 activity. This study presents the first 3D protein aggregation model of condensed tannins, which is important for understanding the bioactivity of polyphenols and broadening the understanding of interactions between proteins and polyphenols.
Article
Agricultural Engineering
Carolyn F. Scagel, Jungmin Lee, Jesse N. Mitchell
INDUSTRIAL CROPS AND PRODUCTS
(2019)
Article
Horticulture
Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, Mary E. Peterson, Patrick A. Jones, Jungmin Lee, Nahla V. Bassil, Robert R. Martin
Editorial Material
Horticulture
Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, Mary E. Peterson, Patrick A. Jones, Gil Buller, Sedat Serce, Jungmin Lee, Nahla V. Bassil, Robert R. Martin
Editorial Material
Horticulture
Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, Mary E. Peterson, Patrick A. Jones, Gil Buller, Jungmin Lee, Nahla V. Bassil, Robert R. Martin
Editorial Material
Horticulture
Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, Mary E. Peterson, Patrick A. Jones, Jungmin Lee, Nahla V. Bassil, Robert R. Martin
Article
Horticulture
Carolyn F. Scagel, Jungmin Lee
SCIENTIA HORTICULTURAE
(2020)
Article
Multidisciplinary Sciences
Kerri L. Steenwerth, Ian Morelan, Ruby Stahel, Rosa Figueroa-Balderas, Dario Cantu, Jungmin Lee, Ron C. Runnebaum, Amisha T. Poret-Peterson
Summary: The study described the microbial composition in 'Pinot noir' grape must under different geographical and temporal conditions, finding that fungal beta diversity reflects growing season precipitation and growing degree days, while bacterial beta diversity is structured by growing season precipitation. Furthermore, microbial differential abundances are associated with vintage, growing season precipitation, and fruit maturity metrics.
Article
Horticulture
Jungmin Lee, Christopher D. Rennaker, Brandon D. Thompson, Alexander Karasev
Summary: Grapevines infected with Grapevine red blotch virus (GRBV) produced grapes with lower sugar and anthocyanin content. While other parameters showed no significant differences, this infection affected grape ripening and wine quality.
SCIENTIA HORTICULTURAE
(2021)
Editorial Material
Plant Sciences
Jennifer Dahan, Gardenia E. E. Orellana, Jungmin Lee, Alexander V. V. Karasev
Article
Food Science & Technology
Victoria D. Paup, Tara L. Barton, Charles G. Edwards, Iris Lange, B. Markus Lange, Jungmin Lee, Carolyn F. Ross
Summary: This study examined the influence of pectinase-producing non-Saccharomyces yeasts on the chemical and sensory attributes of red and white wines with added pectin. The presence of non-Saccharomyces yeasts and pectin addition significantly affected pH, titratable acidity, and concentrations of D-galacturonic acid. Limited sensory differences were observed, but a positive correlation was found between D-galacturonic acid and buttery aroma for Chardonnay and with flavor for Merlot. Utilizing these particular non-Saccharomyces yeasts can improve wine quality without any faults.
JOURNAL OF FOOD SCIENCE
(2022)
Article
Food Science & Technology
Victoria D. Paup, Jesse J. Aplin, Rachel I. Potter, Charles G. Edwards, Jungmin Lee, Carolyn F. Ross
Summary: Recently, there has been an increase in the use and availability of non-Saccharomyces yeasts (NSY) in winemaking for alcohol reduction. However, limited research has been conducted on the impact of these yeasts on the sensory quality of wine, particularly during storage. This study aimed to characterize the sensory profiles of Merlot and Chardonnay wines made with pectinase-producing NSY and added pectin. The results showed that the addition of NSY with pectin resulted in higher concentrations of certain compounds in the wines after aging, and the sensory attributes of the wines were influenced by the yeast, pectin addition, and aging time.
JOURNAL OF FOOD SCIENCE
(2023)
Article
Virology
Jennifer Dahan, Gardenia E. Orellana, Jungmin Lee, Alexander V. Karasev
Summary: Through high-throughput sequencing analysis of total RNA samples from wine grape cultivars in Idaho, five virus genomes of endornaviruses were identified. One of them was a local isolate of grapevine endophyte endornavirus (GEEV), while the other four represented two novel endornaviruses named grapevine endornavirus 1 (GEV1) and grapevine endornavirus 2 (GEV2). The genomes of all three viruses contained a single open reading frame encoding polyproteins with identifiable helicase (HEL) and RNA-dependent RNA polymerase (RdRP) domains, while GEV2 also had a glycosyltransferase domain.
Article
Microbiology
Jennifer Dahan, Gardenia E. Orellana, Jungmin Lee, Alexander V. Karasev
Summary: We report the genome sequences of two genetic variants of grapevine rupestris stem pitting-associated virus (GRSPaV) from Idaho, USA. The coding-complete, positive-strand RNA genome of 8,700 nucleotides contains six open reading frames characteristic of foveaviruses. The two Idaho genetic variants belong to GRSPaV phylogroup 1.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2023)
Article
Food Science & Technology
Jungmin Lee, Christopher D. Rennaker, Brandon D. Thompson, Jennifer Dahan, Alexander V. . Karasev
Summary: This study is the first to investigate the impact of grapevine leafroll-associated virus 3 (GLRaV-3) infected vines on the quality of 'Cabernet Sauvignon' grapes grown in Idaho. Over three growing seasons, a single block of plants, consisting of healthy and GLRaV-3 infected vines, was examined. Grapes from infected vines showed significantly higher concentrations of total organic acids and significantly lower levels of anthocyanins, phenolics, tannins, and free amino acids compared to healthy vines. These findings indicate a negative impact of GLRaV-3 infection on important quality elements of Idaho 'Cabernet Sauvignon' grapes for wine production.
Article
Agronomy
Christine M. Bradish, Jill M. Bushakra, Lisa R. Robbins, Eda Karaadac, Sabrina Teo, Jamie L. Willard, Penelope Perkins-Veazie, Jingmin Lee, Joseph C. Scheerens, Courntey A. Weber, Michael Dossett, Nahla Bassil, Chad E. Finn, Gina E. Fernandez
JOURNAL OF THE AMERICAN POMOLOGICAL SOCIETY
(2020)