Abstract

Background and objectives: Phenolic compounds found in cereals have been shown to possess antioxidant activity that has ensured an increased interest in their health beneficial properties. This review analyzed studies investigating the phenolic content of rice, barley, oats, and sorghum grown in different geographical locations and the effect environmental factors have on them. Findings: From the studies reviewed, it was identified that whole grain pigmented cereals exhibited phenolic profiles with polyphenols such as anthocyanins, proanthocyanidins, and their derivatives that translated to higher total phenolic content and antioxidant activity. Variation in phenolic content was also observed in cereal species grown in different geographical locations and when subjected to variable levels of salinity, water, and temperature. Conclusions: Despite the increasing body of knowledge on the phenolic content of cereals, studies focusing on the effect of environment on cereal phenolic content are limited; hence, more research is warranted. Significance and novelty: This review examines literature to provide a holistic understanding of how environment plays a role in the regulation of phenolic metabolites in cereals such as oats with a focus on pigmented varieties of rice, barley, and sorghum.
Original languageEnglish
Pages (from-to)589-602
Number of pages14
JournalCereal Chemistry
Volume95
Issue number5
Early online date10 Jul 2018
DOIs
Publication statusPublished - 01 Sep 2018

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Antioxidants
Proanthocyanidins
Anthocyanins
Polyphenols
Metabolites
Sorghum
Environmental impact
Hordeum
Health
Geographical Locations
Derivatives
oats
Water
antioxidant activity
barley
Salinity
rice
whole grain foods
water salinity
proanthocyanidins

Cite this

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title = "Cereal phenolic contents as affected by variety and environment",
abstract = "Background and objectives: Phenolic compounds found in cereals have been shown to possess antioxidant activity that has ensured an increased interest in their health beneficial properties. This review analyzed studies investigating the phenolic content of rice, barley, oats, and sorghum grown in different geographical locations and the effect environmental factors have on them. Findings: From the studies reviewed, it was identified that whole grain pigmented cereals exhibited phenolic profiles with polyphenols such as anthocyanins, proanthocyanidins, and their derivatives that translated to higher total phenolic content and antioxidant activity. Variation in phenolic content was also observed in cereal species grown in different geographical locations and when subjected to variable levels of salinity, water, and temperature. Conclusions: Despite the increasing body of knowledge on the phenolic content of cereals, studies focusing on the effect of environment on cereal phenolic content are limited; hence, more research is warranted. Significance and novelty: This review examines literature to provide a holistic understanding of how environment plays a role in the regulation of phenolic metabolites in cereals such as oats with a focus on pigmented varieties of rice, barley, and sorghum.",
keywords = "antioxidant, cereals, environment, phenolic content, polyphenols",
author = "Shiwangni Rao and Schwarz, {Lachlan J.} and Santhakumar, {Abishek B.} and Chinkwo, {Kenneth A.} and Blanchard, {Christopher L.}",
year = "2018",
month = "9",
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doi = "10.1002/cche.10085",
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TY - JOUR

T1 - Cereal phenolic contents as affected by variety and environment

AU - Rao, Shiwangni

AU - Schwarz, Lachlan J.

AU - Santhakumar, Abishek B.

AU - Chinkwo, Kenneth A.

AU - Blanchard, Christopher L.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - Background and objectives: Phenolic compounds found in cereals have been shown to possess antioxidant activity that has ensured an increased interest in their health beneficial properties. This review analyzed studies investigating the phenolic content of rice, barley, oats, and sorghum grown in different geographical locations and the effect environmental factors have on them. Findings: From the studies reviewed, it was identified that whole grain pigmented cereals exhibited phenolic profiles with polyphenols such as anthocyanins, proanthocyanidins, and their derivatives that translated to higher total phenolic content and antioxidant activity. Variation in phenolic content was also observed in cereal species grown in different geographical locations and when subjected to variable levels of salinity, water, and temperature. Conclusions: Despite the increasing body of knowledge on the phenolic content of cereals, studies focusing on the effect of environment on cereal phenolic content are limited; hence, more research is warranted. Significance and novelty: This review examines literature to provide a holistic understanding of how environment plays a role in the regulation of phenolic metabolites in cereals such as oats with a focus on pigmented varieties of rice, barley, and sorghum.

AB - Background and objectives: Phenolic compounds found in cereals have been shown to possess antioxidant activity that has ensured an increased interest in their health beneficial properties. This review analyzed studies investigating the phenolic content of rice, barley, oats, and sorghum grown in different geographical locations and the effect environmental factors have on them. Findings: From the studies reviewed, it was identified that whole grain pigmented cereals exhibited phenolic profiles with polyphenols such as anthocyanins, proanthocyanidins, and their derivatives that translated to higher total phenolic content and antioxidant activity. Variation in phenolic content was also observed in cereal species grown in different geographical locations and when subjected to variable levels of salinity, water, and temperature. Conclusions: Despite the increasing body of knowledge on the phenolic content of cereals, studies focusing on the effect of environment on cereal phenolic content are limited; hence, more research is warranted. Significance and novelty: This review examines literature to provide a holistic understanding of how environment plays a role in the regulation of phenolic metabolites in cereals such as oats with a focus on pigmented varieties of rice, barley, and sorghum.

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KW - cereals

KW - environment

KW - phenolic content

KW - polyphenols

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U2 - 10.1002/cche.10085

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