Total Phenolics, Condensed Tannins, and Protein-Precipitable Phenolics in Young and Mature Leaves of Oak Species

Rajinder K. Dawra; Harinder Paul S. Makkar; Bhupinder Singh

doi:10.1021/jf00083a013

Total Phenolics, Condensed Tannins, and Protein-Precipitable Phenolics in Young and Mature Leaves of Oak Species

Rajinder K. Dawra, Harinder Paul S. Makkar, Bhupinder Singh

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Total phenolics, condensed tannins, proanthocyanidins, leucoanthocyanins, and protein-precipitable phenolics were determined in young and mature leaves of Quercus incana, Quercus semecarpifolia, and Quercus ilex. Total phenols in young leaves of both Q. semecarpifolia and Q. incana were higher, but no difference was observed for Q. ilex. Condensed tannins increased with maturity except in the case of Q. ilex where no change was observed; the same trend was observed for proanthocyanidins and leucoanthocyanins. Protein-precipitable phenolics and total phenols were highest in Q. semecarpifolia and lowest in Q. ilex. The protein-precipitable phenolics had an excellent correlation (r = 0.995) with total phenols.

Original language	English (US)
Pages (from-to)	951-953
Number of pages	3
Journal	Journal of Agricultural and Food Chemistry
Volume	36
Issue number	5
DOIs	https://doi.org/10.1021/jf00083a013
State	Published - Sep 1 1988
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Agricultural and Biological Sciences(all)

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title = "Total Phenolics, Condensed Tannins, and Protein-Precipitable Phenolics in Young and Mature Leaves of Oak Species",

abstract = "Total phenolics, condensed tannins, proanthocyanidins, leucoanthocyanins, and protein-precipitable phenolics were determined in young and mature leaves of Quercus incana, Quercus semecarpifolia, and Quercus ilex. Total phenols in young leaves of both Q. semecarpifolia and Q. incana were higher, but no difference was observed for Q. ilex. Condensed tannins increased with maturity except in the case of Q. ilex where no change was observed; the same trend was observed for proanthocyanidins and leucoanthocyanins. Protein-precipitable phenolics and total phenols were highest in Q. semecarpifolia and lowest in Q. ilex. The protein-precipitable phenolics had an excellent correlation (r = 0.995) with total phenols.",

author = "Dawra, {Rajinder K.} and Makkar, {Harinder Paul S.} and Bhupinder Singh",

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T1 - Total Phenolics, Condensed Tannins, and Protein-Precipitable Phenolics in Young and Mature Leaves of Oak Species

AU - Dawra, Rajinder K.

AU - Makkar, Harinder Paul S.

AU - Singh, Bhupinder

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N2 - Total phenolics, condensed tannins, proanthocyanidins, leucoanthocyanins, and protein-precipitable phenolics were determined in young and mature leaves of Quercus incana, Quercus semecarpifolia, and Quercus ilex. Total phenols in young leaves of both Q. semecarpifolia and Q. incana were higher, but no difference was observed for Q. ilex. Condensed tannins increased with maturity except in the case of Q. ilex where no change was observed; the same trend was observed for proanthocyanidins and leucoanthocyanins. Protein-precipitable phenolics and total phenols were highest in Q. semecarpifolia and lowest in Q. ilex. The protein-precipitable phenolics had an excellent correlation (r = 0.995) with total phenols.

AB - Total phenolics, condensed tannins, proanthocyanidins, leucoanthocyanins, and protein-precipitable phenolics were determined in young and mature leaves of Quercus incana, Quercus semecarpifolia, and Quercus ilex. Total phenols in young leaves of both Q. semecarpifolia and Q. incana were higher, but no difference was observed for Q. ilex. Condensed tannins increased with maturity except in the case of Q. ilex where no change was observed; the same trend was observed for proanthocyanidins and leucoanthocyanins. Protein-precipitable phenolics and total phenols were highest in Q. semecarpifolia and lowest in Q. ilex. The protein-precipitable phenolics had an excellent correlation (r = 0.995) with total phenols.

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