Publications by authors named "Tian-Ci Shi"

2 Publications

  • Page 1 of 1

Cluster bagging promotes melatonin biosynthesis in the berry skins of Vitis vinifera cv. Cabernet Sauvignon and Carignan during development and ripening.

Food Chem 2020 Feb 10;305:125502. Epub 2019 Sep 10.

Shaanxi Engineering Research Center for Viti-Viniculture, College of Enology/College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; Heyang Experimental and Demonstrational Stations for Grape, Northwest A&F University, Heyang, Shaanxi 715300, China. Electronic address:

Melatonin, a tryptophan derivative, is an important functional component in grape berries. We investigated the effect of cluster bagging on melatonin biosynthesis in the berries of two wine grape cultivars, Cabernet Sauvignon and Carignan, during fruit development and ripening. Cluster bagging delayed fruit coloring and ripening, and bag-treated berries of both grape cultivars synthesized more melatonin and most of the precursor compounds including L-tryptophan, N-acetylserotonin, tryptamine, and serotonin compared to those exposed to light (control) conditions. Interestingly, 5-methoxytryptamine was only detected in the berries of Carignan and not of Cabernet Sauvignon, both in the cluster bagging and control groups. In addition, melatonin and most of its precursors, decreased after veraison. VvSNAT1 and VvT5H expression levels were positively correlated with melatonin content. Our findings suggested that melatonin synthesis pathways differ among grape cultivars, and that VvSNAT1 and VvT5H may show key regulatory roles in the melatonin synthesis of grape berries.
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http://dx.doi.org/10.1016/j.foodchem.2019.125502DOI Listing
February 2020

Melatonin in grapes and grape-related foodstuffs: A review.

Food Chem 2017 Sep 24;231:185-191. Epub 2017 Mar 24.

College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Engineering Research Center for Viti-Viniculture, Yangling, Shaanxi 712100, China. Electronic address:

A decade has passed since melatonin was first reported in grapes in 2006. During this time, melatonin has not only been found in the berries of most wine grape (Vitis vinifera L.) cultivars, but also in most grape-related foodstuffs, e.g. wine, grape juice and grape vinegar. In this review, we discuss the melatonin content in grapes and grape-related foodstuffs (especially wine) from previous studies, the physiological function of melatonin in grapes, and the factors contributing to the production of melatonin in grapes and wines. In addition, we identify future research needed to clarify the mechanisms of grape melatonin biosynthesis and regulation, and establish more accurate analysis methods for melatonin in grapes and wines.
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http://dx.doi.org/10.1016/j.foodchem.2017.03.137DOI Listing
September 2017
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