Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human Consumption

Flavonoids are a class of polyphenolic compounds that naturally occur in plants. Sub-groups of flavonoids include flavone, flavonol, flavanone, flavanonol, anthocyanidin, flavanol and isoflavone. The various modifications on flavonoid molecules further increase the diversity of flavonoids. Certain c...

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Main Authors: Yee-Shan Ku, Ming-Sin Ng, Sau-Shan Cheng, Annie Wing-Yi Lo, Zhixia Xiao, Tai-Sun Shin, Gyuhwa Chung, Hon-Ming Lam
Format: Article
Language:English
Published: MDPI AG 2020-06-01
Series:Nutrients
Subjects:
Online Access:https://www.mdpi.com/2072-6643/12/6/1717
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author Yee-Shan Ku
Ming-Sin Ng
Sau-Shan Cheng
Annie Wing-Yi Lo
Zhixia Xiao
Tai-Sun Shin
Gyuhwa Chung
Hon-Ming Lam
author_facet Yee-Shan Ku
Ming-Sin Ng
Sau-Shan Cheng
Annie Wing-Yi Lo
Zhixia Xiao
Tai-Sun Shin
Gyuhwa Chung
Hon-Ming Lam
author_sort Yee-Shan Ku
collection DOAJ
description Flavonoids are a class of polyphenolic compounds that naturally occur in plants. Sub-groups of flavonoids include flavone, flavonol, flavanone, flavanonol, anthocyanidin, flavanol and isoflavone. The various modifications on flavonoid molecules further increase the diversity of flavonoids. Certain crops are famous for being enriched in specific flavonoids. For example, anthocyanins, which give rise to a purplish color, are the characteristic compounds in berries; flavanols are enriched in teas; and isoflavones are uniquely found in several legumes. It is widely accepted that the antioxidative properties of flavonoids are beneficial for human health. In this review, we summarize the classification of the different sub-groups of flavonoids based on their molecular structures. The health benefits of flavonoids are addressed from the perspective of their molecular structures. The flavonoid biosynthesis pathways are compared among different crops to highlight the mechanisms that lead to the differential accumulation of different sub-groups of flavonoids. In addition, the mechanisms and genes involved in the transport and accumulation of flavonoids in crops are discussed. We hope the understanding of flavonoid accumulation in crops will guide the proper balance in their consumption to improve human health.
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spelling doaj.art-7ae736d81b184921a0ce919a33ea5dc72023-11-20T03:09:43ZengMDPI AGNutrients2072-66432020-06-01126171710.3390/nu12061717Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human ConsumptionYee-Shan Ku0Ming-Sin Ng1Sau-Shan Cheng2Annie Wing-Yi Lo3Zhixia Xiao4Tai-Sun Shin5Gyuhwa Chung6Hon-Ming Lam7Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, ChinaCentre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, ChinaCentre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, ChinaCentre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, ChinaCentre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, ChinaDivision of Food and Nutrition, Chonnam National University, Gwangju 61186, KoreaDepartment of Biotechnology, Chonnam National University, Yeosu 59626, KoreaCentre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, ChinaFlavonoids are a class of polyphenolic compounds that naturally occur in plants. Sub-groups of flavonoids include flavone, flavonol, flavanone, flavanonol, anthocyanidin, flavanol and isoflavone. The various modifications on flavonoid molecules further increase the diversity of flavonoids. Certain crops are famous for being enriched in specific flavonoids. For example, anthocyanins, which give rise to a purplish color, are the characteristic compounds in berries; flavanols are enriched in teas; and isoflavones are uniquely found in several legumes. It is widely accepted that the antioxidative properties of flavonoids are beneficial for human health. In this review, we summarize the classification of the different sub-groups of flavonoids based on their molecular structures. The health benefits of flavonoids are addressed from the perspective of their molecular structures. The flavonoid biosynthesis pathways are compared among different crops to highlight the mechanisms that lead to the differential accumulation of different sub-groups of flavonoids. In addition, the mechanisms and genes involved in the transport and accumulation of flavonoids in crops are discussed. We hope the understanding of flavonoid accumulation in crops will guide the proper balance in their consumption to improve human health.https://www.mdpi.com/2072-6643/12/6/1717cropsphenolic compoundsflavonoidsbiosynthesis pathwayABC transportersMATE transporters
spellingShingle Yee-Shan Ku
Ming-Sin Ng
Sau-Shan Cheng
Annie Wing-Yi Lo
Zhixia Xiao
Tai-Sun Shin
Gyuhwa Chung
Hon-Ming Lam
Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human Consumption
Nutrients
crops
phenolic compounds
flavonoids
biosynthesis pathway
ABC transporters
MATE transporters
title Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human Consumption
title_full Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human Consumption
title_fullStr Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human Consumption
title_full_unstemmed Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human Consumption
title_short Understanding the Composition, Biosynthesis, Accumulation and Transport of Flavonoids in Crops for the Promotion of Crops as Healthy Sources of Flavonoids for Human Consumption
title_sort understanding the composition biosynthesis accumulation and transport of flavonoids in crops for the promotion of crops as healthy sources of flavonoids for human consumption
topic crops
phenolic compounds
flavonoids
biosynthesis pathway
ABC transporters
MATE transporters
url https://www.mdpi.com/2072-6643/12/6/1717
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