Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MS

Rice (Oryza sativa L.) contains generous amounts of carbohydrates, proteins, vitamins, and dietary fibers, in addition to secondary metabolites such as phenols and flavonoids that act as antioxidants. The phenolic compounds detected in rice (organic rice (OR), conventional rice (CR), and pesticide-f...

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Main Authors: Mayakrishnan Prabakaran, Ill-Min Chung, Na-Young Son, Hee-Youn Chi, So-Yeon Kim, Yu-Jin Yang, Chang Kwon, Yeon-Ju An, Ateeque Ahmad, Seung-Hyun Kim
Format: Article
Language:English
Published: MDPI AG 2018-12-01
Series:Molecules
Subjects:
Online Access:http://www.mdpi.com/1420-3049/24/1/67
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author Mayakrishnan Prabakaran
Ill-Min Chung
Na-Young Son
Hee-Youn Chi
So-Yeon Kim
Yu-Jin Yang
Chang Kwon
Yeon-Ju An
Ateeque Ahmad
Seung-Hyun Kim
author_facet Mayakrishnan Prabakaran
Ill-Min Chung
Na-Young Son
Hee-Youn Chi
So-Yeon Kim
Yu-Jin Yang
Chang Kwon
Yeon-Ju An
Ateeque Ahmad
Seung-Hyun Kim
author_sort Mayakrishnan Prabakaran
collection DOAJ
description Rice (Oryza sativa L.) contains generous amounts of carbohydrates, proteins, vitamins, and dietary fibers, in addition to secondary metabolites such as phenols and flavonoids that act as antioxidants. The phenolic compounds detected in rice (organic rice (OR), conventional rice (CR), and pesticide-free rice (PFR)), namely, protocatechuic, gentisic, p-hydroxybenzoic, p-coumaric, ferulic, salicylic, and caffeic acids, are notable free radical scavengers. The sum of these phenolic compounds was found to be higher in PFR, followed by CR and OR (p < 0.0001), when the rice types were classified based on the farming system employed. In addition, significant differences were observed in the p-hydroxybenzoic acid levels for the OR and CR groups compared with the PFR groups (p < 0.01). Furthermore, greater quantities of p-coumaric acid were found in CR-08 and OR-02, although these groups contained overall higher and lower sums of phenolic compounds, respectively. Moreover, significance was observed in the sum of the phenolic compounds, although only small quantities were found in polished rice. Further research is thus required to provide a clearer picture regarding the phenolic profiles of different rice brands.
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spelling doaj.art-6680d8db5ae44d2db8c35c809ff724762022-12-21T17:59:09ZengMDPI AGMolecules1420-30492018-12-012416710.3390/molecules24010067molecules24010067Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MSMayakrishnan Prabakaran0Ill-Min Chung1Na-Young Son2Hee-Youn Chi3So-Yeon Kim4Yu-Jin Yang5Chang Kwon6Yeon-Ju An7Ateeque Ahmad8Seung-Hyun Kim9Department of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaProcess Chemistry and Technology Department, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, IndiaDepartment of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, KoreaRice (Oryza sativa L.) contains generous amounts of carbohydrates, proteins, vitamins, and dietary fibers, in addition to secondary metabolites such as phenols and flavonoids that act as antioxidants. The phenolic compounds detected in rice (organic rice (OR), conventional rice (CR), and pesticide-free rice (PFR)), namely, protocatechuic, gentisic, p-hydroxybenzoic, p-coumaric, ferulic, salicylic, and caffeic acids, are notable free radical scavengers. The sum of these phenolic compounds was found to be higher in PFR, followed by CR and OR (p < 0.0001), when the rice types were classified based on the farming system employed. In addition, significant differences were observed in the p-hydroxybenzoic acid levels for the OR and CR groups compared with the PFR groups (p < 0.01). Furthermore, greater quantities of p-coumaric acid were found in CR-08 and OR-02, although these groups contained overall higher and lower sums of phenolic compounds, respectively. Moreover, significance was observed in the sum of the phenolic compounds, although only small quantities were found in polished rice. Further research is thus required to provide a clearer picture regarding the phenolic profiles of different rice brands.http://www.mdpi.com/1420-3049/24/1/67rice (Oryza sativa L.)pesticide-free riceconventional riceorganic ricephenolic compoundLC-ESI-MS/MS
spellingShingle Mayakrishnan Prabakaran
Ill-Min Chung
Na-Young Son
Hee-Youn Chi
So-Yeon Kim
Yu-Jin Yang
Chang Kwon
Yeon-Ju An
Ateeque Ahmad
Seung-Hyun Kim
Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MS
Molecules
rice (Oryza sativa L.)
pesticide-free rice
conventional rice
organic rice
phenolic compound
LC-ESI-MS/MS
title Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MS
title_full Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MS
title_fullStr Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MS
title_full_unstemmed Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MS
title_short Analysis of Selected Phenolic Compounds in Organic, Pesticide-Free, Conventional Rice (Oryza sativa L.) Using LC-ESI-MS/MS
title_sort analysis of selected phenolic compounds in organic pesticide free conventional rice oryza sativa l using lc esi ms ms
topic rice (Oryza sativa L.)
pesticide-free rice
conventional rice
organic rice
phenolic compound
LC-ESI-MS/MS
url http://www.mdpi.com/1420-3049/24/1/67
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