Determination of phenolic compounds, flavonoids, and antioxidant activities in crude water extracts of Thai red and white rice cultivars

Srisawat, Umarat; Panunto, Watcharin; Kaendee, Noppamat; Tanuchit, Sermkiat; Itharat, Arunporn; Lerdvuthisopon, Nusiri; Hansakul, Pintusomrn

doi:10.1055/s-0030-1264431

Cited by 17 publications

(2 citation statements)

References 13 publications

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“…The changes of DPPH scavenging activity of aqueous extracts of plant materials by heat treatment have been reported (Arina and Harisum, 2019;Park et al, 2019). Furthermore, a stronger scavenging activity of water extracts obtained from red-hulled rice than those from white-hulled rice has been reported by Srisawat et al (2010). The α-glucosidase inhibitory activity of germinated white and red rice ethanol extracts has been reported by Pramai et al (2018) in which no significant difference in the percent of inhibition of α-glucosidase was observed between those samples.…”

Section: Discussionmentioning

confidence: 95%

Metabolite Profiles of Red and White Rice Aqueous Extracts Derived at Different Temperatures and Their Relationship with Biological Properties as Determined Using 1H-NMR-Based Metabolomics Analysis

Netrprachit¹,

Nuangchamnong²,

Ramli³

et al. 2020

CMUJNS

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Consumption of pigmented rice has continued to increase in recent years, due in part to its potential health promoting properties, especially protection against chronic diseases. Chemical extracts of red rice have demonstrated strong ability to scavenge free radicals, however little is yet known about water extracts of red rice. The antioxidant activity, α-glucosidase inhibition, nitric oxide inhibition, and metabolic profiling of this cultivar's water extracts have yet to be investigated. In this study, red rice and white rice were extracted using ultrasound-assisted hydrothermal extraction at three different temperatures. The total phenolic content (TPC) as well as the DPPH radical scavenging, α-glucosidase inhibitory, and nitric oxide (NO) inhibitory activities of each extract were determined. NMR analysis was performed to find out the metabolite profiles of the extracts. Correlations between the metabolites and the biological activities of the rice extracts were then investigated using metabolomics analysis. Results show that the red rice aqueous extracts had a higher TPC than the white rice extracts. The highest extraction temperature led to a decrease in the TPC. However, the extraction temperature did not

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Section: Discussionmentioning

confidence: 95%

Metabolite Profiles of Red and White Rice Aqueous Extracts Derived at Different Temperatures and Their Relationship with Biological Properties as Determined Using 1H-NMR-Based Metabolomics Analysis

Netrprachit¹,

Nuangchamnong²,

Ramli³

et al. 2020

CMUJNS

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“…The pigment of the seed coat is red. It has high nutritional value and high antioxidant activity that is correlated to the avonoid and phenolic contents (Hansakul et al 2010) and is in demand by the elderly and health-conscious people. However, the available products are only available domestically.…”

Section: Introductionmentioning

confidence: 99%

Participation Guarantee System: Promoting Thai Rice using International Geographical Indication and Organic Agriculture Standard Certification

Tongkaemkaew

BAUKHLAUN

Azman

et al. 2022

Preprint

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Sangyod rice has a high export potential because it is a high nutrient, Geographical Indication (GI) rice, and its cultivation is encouraged under the Organic Agriculture Thailand Standard. However, it can still not maximize export value due to limitations in developing international organic farming standards. This study extended the participatory guarantee systems (PGS) criteria under GI and the National Organic Program (NOP)–the United States Department of Agriculture (USDA) organic standard by investigating its implementation by the Khao Sang Yod Maung Phatthalung Producers and Traders Association (SPTA). The voluntary participants involved 7 internal auditors, 17 committees, and 1 mill processor. According to the GI and USDA organic criteria, the internal control system based on PGS for the SPTA (PGS-SPTA) improved the rice processer, 12 farmers obtained GI and USDA organic certificates, and 93 farmers received GI certificates. In addition, internal auditors were certified under international organic agriculture standards. However, although Sangyod rice meets both GI and international standards, it cannot be exported because there is an insufficient area under production by the farmers under the criteria mentioned. Therefore, the Phatthalung province should promote the PGS-SPTA system for farmers with development qualifications to expand the area of Sangyod rice organic farming that meets export standards.

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Brown Rice Sprouts: A Leading Functional Food Product

Garg,

Yashveer,

Singh

et al. 2023

Advances in Plant Sprouts

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Determination of phenolic compounds, flavonoids, and antioxidant activities in crude water extracts of Thai red and white rice cultivars

Cited by 17 publications

References 13 publications

Metabolite Profiles of Red and White Rice Aqueous Extracts Derived at Different Temperatures and Their Relationship with Biological Properties as Determined Using 1H-NMR-Based Metabolomics Analysis

Metabolite Profiles of Red and White Rice Aqueous Extracts Derived at Different Temperatures and Their Relationship with Biological Properties as Determined Using 1H-NMR-Based Metabolomics Analysis

Participation Guarantee System: Promoting Thai Rice using International Geographical Indication and Organic Agriculture Standard Certification

Brown Rice Sprouts: A Leading Functional Food Product

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