现代食品科技2017，Vol.33Issue(4)：96-100,107,6.DOI:10.13982/j.mfst.1673-9078.2017.4.015
不同树龄侧柏木精油差异的研究
Differences in the Essential Oils from Different Ages of Platycladus orientalis
摘要
Abstract
Essential oils were extracted from three Platycladus orientalis woods of different ages by supercritical fluid extraction,and the differences in the extraction rate,sensory characteristics,composition,and antimicrobial efficacy of the three essential oils were studied.The results indicated that an older P.orientalis could yield a higher extraction rate of platycladus orientalis (up to 9.98％),and the flavor of the essential oil was stronger and mellower.Gas chromatography-mass spectrometry was used to analyze the components of the essential oils,and the results showed that older P.orientalis had higher contents of the main active ingredients,including thujopsene,cedrol,and cuparene.The minimum inhibitory concentration (MIC) method was employed to compare the antimicrobial activities of the three essential oils.The result revealed that older P.orientalis had a lower MIC value,and the MIC values against four bacteria (Staphylococcus aureus,Lactobacillus,Escherichia coli,and Salmonella) all reached 0.05 mg/mL,showing a strong antimicrobial activity.This experimental result shows that the aging time of P.orientalis wood has an important influence on the favor,content,oil composition,and function of the essential oil,and the essential oil of older P.orientalis has a higher application value.关键词
侧柏/精油/提取率/GC-MS法/最低抑菌浓度Key words
Platycladus orientalis/essential oil/extraction rate/gas chromatography-mass spectrometry/minimum inhibitory concentration引用本文复制引用
张俊浩,杨继国,杜高发,张登辉,熊犍,宁正祥,郭新东..不同树龄侧柏木精油差异的研究[J].现代食品科技,2017,33(4):96-100,107,6.基金项目
十二五科技支撑计划项目子课题(2012BAD33B11) （2012BAD33B11）
