摘要
利用单相变压器工作原理将不同储藏期的橄榄油作为次级线圈,在室温下考察激励电压、频率和不同匝数比对橄榄油的电学特性影响,结果发现随样品的酸价和过氧化值提高其终端电压也增高,频率对不同样品的终端电压无显著影响,橄榄油的酸价和过氧化值可采用终端电压进行量化,激励电压为25 V时酸价和终端电压呈现线性关系且决定系数最高为R2=0.998,而激励电压为20 V时过氧化值和终端电压呈现2项式函数关系且决定系数最高为R2=0.991,采用130个不同酸价和过氧化值的样品对回归方程进行校验发现样品的酸价和过氧化值的预测值和实际值的相关系数分别为r=0.948和r=0.974,通过施加交变磁通来考察橄榄油的电学参数可作为一种潜在的快速检测其酸价和过氧化值的方法。
The effect of excitation under room temperature based on taking voltage, frequency, different turns ratios on electrical properties of olive oil olive oil of different storage periods as secondary winding by using single - phase transformer working principle was studied. The results of this method revealed increased acid and peroxide val- ues of the samples in association with increased terminal voltage. The frequency had no significant influence on the terminal voltage of different samples. The acid and peroxide values of olive oil could be quantified by their terminal voltage. The linear relationship between acid value and terminal voltage arose and determination coefficient was no more than 0. 998 when the excitation voltage was 25 V. The binomial function relationship between the peroxide value and terminal voltage arose and determination coefficient was no more than 0. 998 when the excitation voltage was 20 V. A total of 130 samples, with various acid and peroxide values, were as used to verify the regression equation. It was founded that the correlation coefficient between predicted and actual acid and peroxide values of the samples were 0. 948 and 0. 974, respectively. Applying alternating flux to investigate electrical parameters of olive oil could be taken as one kind of potential rapid detection method of acid and peroxide values.
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2017年第1期130-134,共5页
Journal of the Chinese Cereals and Oils Association
基金
"十二五"国家科技支撑计划(2012BAD37B00)
关键词
橄榄油
储藏
酸价
过氧化值
感应方法
相关性
olive oil
storage
acid value
peroxide value
inductive method
correlation
作者简介
杨哪，男，1982年出生，博士，食品科学
通信作者：徐学明，男，1968年出生，教授，碳水化合物
