文献类型：期刊文献

中文题名：贮藏条件对油茶饼残油品质的影响

英文题名：Effect of Storage on Quality of Oil in Camellia oleifera Cake

作者：方学智[1] 费学谦[1] 丁明[1] 姚小华[1] 王开良[1] 欧资东[2]

第一作者：方学智

机构：[1]中国林业科学研究院亚热带林业研究所;[2]浙江中南建筑集团有限公司

年份：2007

卷号：20

期号：4

起止页码：532-536

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：科技部社会公益研究专项"主要经济林产品质量控制关键技术研究"(2002DIB50124);浙江省科技厅项目"主要经济林产品高效安全生产与示范"(2004C32073)

语种：中文

中文关键词：贮藏;油茶饼;含油率与含水量;过氧化值;酸值

外文关键词：storage;Camellia oleifera Cake; oil and water content; peroxide value; acid value

分类号：S794.4

摘要：对20种不同来源、不同榨取方式(液压和螺旋榨)的油茶饼含油率和含水量进行了分析,并从中选取浙江淳安、广西岺溪、贵州黎平、江西平江四地的油茶饼进行常温和冷藏条件的贮藏试验。研究结果表明:20种油茶饼的平均含油率为7.62%,平均含水量为12.13%;2种榨取方式含水量差异显著(p<0.05)。随着贮藏时间的延长,常温贮藏和冷藏条件下油茶饼含油率均下降,但常温贮藏油茶饼含油率下降速度快于冷藏处理。常温贮藏下,油茶饼中残油酸值与过氧化值平均贮藏2个月后超标;冷藏条件下,过氧化值平均贮藏4个月后超标。不同产地的油茶饼含油率、过氧化值和酸值变化存在显著差异,4种油茶饼中,浙江淳安油茶饼含油率下降最少,过氧化值和酸值上升最慢;而广西岺溪含油率下降最多,常温贮藏7个月后,含油率比对照下降了33.99%,过氧化值和酸值分别比对照上升了7.53和46.89倍。油茶饼过氧化值与贮藏时间的关系符合曲线回归方程y=a+b×exp(x/t);常温贮藏条件下酸值与贮藏时间的关系也符合以上回归方程,而冷藏条件下酸值与贮藏时间的关系符合二次方程y=a+bx+cx2。
Oil and water contents in cakes of Camellia oleifera from twenty locations of China were analyzed. Four of these cakes were chosen to investigate the impact of storage on quality of oil. Results are as following：Average oil and water contents of twenty cakes were 7.62% and 12.13% respectively. Under both room and refrigeration condi- tions, there stood a trend of decline in oil content, but the decline of oil content in room condition was more rapid than in refrigeration condition. Conversely, the peroxide value and acidity increased during the period of storage. Among four chosen cakes, the cake from Zhejiang Chun＇ an not only in the decrease of oil but also in the increase of peroxide value and acidity was slower than others. In contrast, the cake from Chenxi was faster than others in the decline of oil content and the increase of acidity. The regression relationship between peroxide value and time, both in room condition and refrigeration condition, followed a curve equation y = a ＋ b exp（x/t） ; similarly, the relationship between acidity in room condition and time also followed the equation y = a ＋ b exp（x/t） , and the equation of acidity in refrigeration condition contrast time is y = a ＋ bx ＋ cx^2.