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Effects of thermal treatments on 10 major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers.
R Soc Open Sci. 2018 Jun; 5(6):180364.RS

Abstract

This study aimed to investigate effects of thermal treatments on major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers (ATL and ATF, respectively). With ultra performance liquid chromatography-diode array detector-quadrupole time-of-flight-mass spectrometer/mass spectrometer, phenolic compositions of ATF were first characterized and compared with those of ATL. An optimized high performance liquid chromatography fingerprint was then established, and 10 major phenolics existing in both ATL and ATF were quantified. Gallic acid derivatives and flavonol-3-O-glycosides were found to be their dominant phenolic constituents, with the former being key constituents which was affected by thermal treatments and further influencing the variations of total phenols. Moreover, the mechanism underlining the changes of phenolics in ATL and ATF by the treatments was characterized as a thermolhydrolysis process. During thermal treatments, polymerized gallotannins were hydrolysed to 1,2,3,4,6-pentakis-O-galloyl-β-d-glucose, ethyl gallate and gallic acid, resulting in more than fivefold and twofold increase of their contents in ATL and ATF, respectively. By contrast, contents and antioxidant contributions of flavonol-3-O-glycosides gradually decreased during the process.\absbreak Overall, this is, to our knowledge, the first report on the effects of thermal treatments on phenolics and their antioxidant contributions in ATL and ATF, and the three gallic acid derivatives with potentially higher bioactivity could be efficiently achieved by thermal treatments.

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Authors+Show Affiliations

National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, People's Republic of China.

National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, People's Republic of China.

Department of Food Science, Rutgers University, New Brunswick, NJ, USA.

National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, People's Republic of China.

National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, People's Republic of China.

National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Haidian District, Beijing, People's Republic of China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30110480

Citation

Yang, Lingguang, et al. "Effects of Thermal Treatments On 10 Major Phenolics and Their Antioxidant Contributions in Acer Truncatum Leaves and Flowers." Royal Society Open Science, vol. 5, no. 6, 2018, p. 180364.

Yang L, Yin P, Ho CT, et al. Effects of thermal treatments on 10 major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers. R Soc Open Sci. 2018;5(6):180364.

Yang, L., Yin, P., Ho, C. T., Yu, M., Sun, L., & Liu, Y. (2018). Effects of thermal treatments on 10 major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers. Royal Society Open Science, 5(6), 180364. https://doi.org/10.1098/rsos.180364

Yang L, et al. Effects of Thermal Treatments On 10 Major Phenolics and Their Antioxidant Contributions in Acer Truncatum Leaves and Flowers. R Soc Open Sci. 2018;5(6):180364. PubMed PMID: 30110480.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Effects of thermal treatments on 10 major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers. AU - Yang,Lingguang, AU - Yin,Peipei, AU - Ho,Chi-Tang, AU - Yu,Miao, AU - Sun,Liwei, AU - Liu,Yujun, Y1 - 2018/06/27/ PY - 2018/03/13/received PY - 2018/05/14/accepted PY - 2018/8/16/entrez PY - 2018/8/16/pubmed PY - 2018/8/16/medline KW - Acer truncatum leaves and flowers KW - UPLC-DAD-QTOF-MS/MS analysis KW - antioxidant contribution KW - phenolics KW - thermal treatment SP - 180364 EP - 180364 JF - Royal Society open science JO - R Soc Open Sci VL - 5 IS - 6 N2 - This study aimed to investigate effects of thermal treatments on major phenolics and their antioxidant contributions in Acer truncatum leaves and flowers (ATL and ATF, respectively). With ultra performance liquid chromatography-diode array detector-quadrupole time-of-flight-mass spectrometer/mass spectrometer, phenolic compositions of ATF were first characterized and compared with those of ATL. An optimized high performance liquid chromatography fingerprint was then established, and 10 major phenolics existing in both ATL and ATF were quantified. Gallic acid derivatives and flavonol-3-O-glycosides were found to be their dominant phenolic constituents, with the former being key constituents which was affected by thermal treatments and further influencing the variations of total phenols. Moreover, the mechanism underlining the changes of phenolics in ATL and ATF by the treatments was characterized as a thermolhydrolysis process. During thermal treatments, polymerized gallotannins were hydrolysed to 1,2,3,4,6-pentakis-O-galloyl-β-d-glucose, ethyl gallate and gallic acid, resulting in more than fivefold and twofold increase of their contents in ATL and ATF, respectively. By contrast, contents and antioxidant contributions of flavonol-3-O-glycosides gradually decreased during the process.\absbreak Overall, this is, to our knowledge, the first report on the effects of thermal treatments on phenolics and their antioxidant contributions in ATL and ATF, and the three gallic acid derivatives with potentially higher bioactivity could be efficiently achieved by thermal treatments. SN - 2054-5703 UR - https://www.unboundmedicine.com/medline/citation/30110480/Effects_of_thermal_treatments_on_10_major_phenolics_and_their_antioxidant_contributions_in_Acer_truncatum_leaves_and_flowers_ DB - PRIME DP - Unbound Medicine ER -