粮油食品科技
糧油食品科技
량유식품과기
SCIENCE AND TECHNOLOGY OF CEREALS,OILS AND FOODS
2014年
6期
78-82
,共5页
白酒检测%电子鼻%电子舌%主成分分析%线性判别分析%偏最小二乘法
白酒檢測%電子鼻%電子舌%主成分分析%線性判彆分析%偏最小二乘法
백주검측%전자비%전자설%주성분분석%선성판별분석%편최소이승법
detection of Chinese liquor%electronic nose%electronic tongue%principal component analysis%linear discriminant analysis%partial least square method
研究利用电子鼻和电子舌技术快速检测白酒品质。以不同品牌、不同香型和不同比例掺假白酒为检测对象，采用主成分分析、线性判别分析和偏最小二乘法对电子鼻整体气味响应图谱和电子舌在1、10、100和1000Hz 四个不同频段脉冲激发下的金、银、钨、钛四个工作电极组成的传感电极阵列响应信号进行分析。结果显示：电子舌对不同品牌和不同香型白酒的区分能力要优于电子鼻，且 LDA 的识别效果较 PCA 更好；利用偏最小二乘法建立的定量预测模型，在主成分数取5时，电子舌所建模型最优。用独立样品检验模型精度，模型预测值和参考值的相关系数为0.881。研究结果可为白酒生产和销售过程中的质量监控提供支持。
研究利用電子鼻和電子舌技術快速檢測白酒品質。以不同品牌、不同香型和不同比例摻假白酒為檢測對象，採用主成分分析、線性判彆分析和偏最小二乘法對電子鼻整體氣味響應圖譜和電子舌在1、10、100和1000Hz 四箇不同頻段脈遲激髮下的金、銀、鎢、鈦四箇工作電極組成的傳感電極陣列響應信號進行分析。結果顯示：電子舌對不同品牌和不同香型白酒的區分能力要優于電子鼻，且 LDA 的識彆效果較 PCA 更好；利用偏最小二乘法建立的定量預測模型，在主成分數取5時，電子舌所建模型最優。用獨立樣品檢驗模型精度，模型預測值和參攷值的相關繫數為0.881。研究結果可為白酒生產和銷售過程中的質量鑑控提供支持。
연구이용전자비화전자설기술쾌속검측백주품질。이불동품패、불동향형화불동비례참가백주위검측대상，채용주성분분석、선성판별분석화편최소이승법대전자비정체기미향응도보화전자설재1、10、100화1000Hz 사개불동빈단맥충격발하적금、은、오、태사개공작전겁조성적전감전겁진렬향응신호진행분석。결과현시：전자설대불동품패화불동향형백주적구분능력요우우전자비，차 LDA 적식별효과교 PCA 경호；이용편최소이승법건립적정량예측모형，재주성분수취5시，전자설소건모형최우。용독립양품검험모형정도，모형예측치화삼고치적상관계수위0.881。연구결과가위백주생산화소수과정중적질량감공제공지지。
The rapid detection of Chinese liquor quality by electronic nose and electronic tongue was stud-ied.The adulterated liquors with different brands,different flavors and different proportions were detec-ted.The overall odor response spectra of electronic nose and the response signals of electronic tongue, excitated by pulse in 1Hz,10Hz,100Hz and 1000Hz four frequency bands,composed of gold,silver, tungsten,titanium four working electrodes,were analyzed by principal component analysis,linear dis-criminant analysis and partial least square method.The results showed that electronic tongue was superior to electronic nose in distinguish different brands and different flavor of liquors,and the recognition effect of linear discriminant analysis was exceeded than that of principal component analysis.For the quantita-tive prediction model according partial least square method,when taking 5 principal components,the model of electronic tongue was the optimal one.The model accuracy was tested by independent sample;the correlation coefficient of prediction and reference values of PLS model was 0.881.This method will provide basic information for quality control of liquors both in production and sale.
