摘要
以中国3个主要品种群中不同产区的24个板栗品种为试材,研究板栗种仁中的脂肪含量及脂肪酸组成特性,探讨不同品种以及品种群板栗种仁中脂肪含量及脂肪酸构成的差异。结果表明:1)板栗种仁中的脂肪含量在1.15～4.48g/100g(以干质量计)之间;2)板栗种仁中主要包含了从C14～C20碳链长度的饱和脂肪酸(SFA)和不饱和脂肪酸(UFA),其中C16和C18是最主要的两类脂肪酸,它们在脂肪酸组成中所占比例分别在7.35%～25.81%和64.51%～91.83%范围内;3)C16/C18在0.08～0.37之间,且C16脂肪酸中以饱和态的C16:0为主,C18脂肪酸中以不饱和态的C18:1、C18:2为主;4)板栗种仁中的SFA所占比例(9.64%～29.22%)远远低于UFA所占比例(70.78%～90.36%),SFA/UFA构成比例在0.11～0.41之间。结果表明,板栗种仁脂肪含量及脂肪酸组成在不同品种之间存在显著差异,但在品种群之间没有表现出明显差异。
Tweenty-four cultivars of Chinese chestnut（Castanea mollissima Blume） collected from different growing regions and assigned to three major groups in China were tested in this study.Fat content and fatty acid composition of the kernels of these cultivars were determined on a dry matter basis to explore the differeneces among the single cultivars and among the groups.Fat content in the kernels of the 24 cultivars varied between 1.15 g/100 g and 4.48 g/100 g.Saturated fatty acids（SFA） and unsaturate fatty acids（UFA） with carbon chain length ranging from C14 to C20 were detected as main fatty acids,and among them C16and C18were the most predominant,which accounted for 7.35% to 25.81% and 64.51% to 91.83% of the total fatty acids,respectively,with a ratio of C16 to C18 ranging from 0.08 to 0.37.The most dominant C16 fatty acid was C16：0,and the most dominant C18fatty acids were C18：1and C18：2.SFAs represented a much lower percentage（9.64%-29.22%） of the total fatty acids than UFAs（70.78%–90.36%）,with a SFA/UFA ratio of 0.11 to 0.41.To sum up,both fat content and fatty acid composition indicate significant differences among the kernels of different cultviars rather than among different groups.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2013年第10期153-158,共6页
Food Science
基金
中央级公益性科研院所基本科研业务费专项(2007-09)
关键词
板栗
脂肪
脂肪酸
品种
品种群
Chinese chestnut
fat
fatty acid
cultivar
cultivar group
