caa a22 4500 463247337 CHVBK 20180405153329.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10086-007-0896-6 doi (NATIONALLICENCE)springer-10.1007/s10086-007-0896-6 Exploitation of polyphenol-rich pine barks for potent antioxidant activity [Elektronische Daten] [Chang Ku, Jeong Jang, Sung Mun] The phenolic composition of pine bark from a variety of Pinus species was estimated by measuring Klason lignin, acid-soluble lignin, and a 1% NaOH extract. Polyphenol contents of hot water extracts from pine bark were determined by the Folin-Ciocalteu assay and the vanillin-H2SO4 assay. Among the pine bark varieties investigated, Pinus radiata bark showed the highest polyphenol content and potent antioxidant activity. Pinus rigida bark was also a usable polyphenol-rich source, whereas Pinus densiflora bark had a low yield (5.1%) of hot water extract, although it showed potent antioxidant activity. Correlations between proanthocyanidin content in pine bark and antioxidant activity were observed. The results suggested that proanthocyanidin was the crucial contributor to potent antioxidant activity in pine bark. The Japan Wood Research Society, 2007 Pine bark nationallicence Polyphenol nationallicence Antioxidant activity nationallicence Proanthocyanidin nationallicence Ku Chang Department of Advanced Organic Materials Engineering, Chonbuk National University, 561-756, Jeonju, Korea aut Jang Jeong Department of Advanced Organic Materials Engineering, Chonbuk National University, 561-756, Jeonju, Korea aut Mun Sung Division of Forest Science, College of Agriculture and Life Sciences, Chonbuk National University, 561-756, Jeonju, Korea aut Journal of Wood Science Springer-Verlag 53/6(2007-12-01), 524-528 1435-0211 53:6<524 2007 53 10086 https://doi.org/10.1007/s10086-007-0896-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-007-0896-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ku Chang Department of Advanced Organic Materials Engineering, Chonbuk National University, 561-756, Jeonju, Korea aut NATIONALLICENCE 700 1- Jang Jeong Department of Advanced Organic Materials Engineering, Chonbuk National University, 561-756, Jeonju, Korea aut NATIONALLICENCE 700 1- Mun Sung Division of Forest Science, College of Agriculture and Life Sciences, Chonbuk National University, 561-756, Jeonju, Korea aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/6(2007-12-01), 524-528 1435-0211 53:6<524 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer