基于多頻脈沖電子舌的茶飲料區(qū)分辨識 牛海霞 (浙江工商大學(xué)食品感官科學(xué)實(shí)驗(yàn)室，浙江省食品安全ZD實(shí)驗(yàn)室，浙江杭州310035) 摘要：多頻脈沖電子舌是一種采用多頻率大幅脈沖作為激發(fā)掃描信號，用幾種不同的非修飾金屬電極組成傳感器陣列，檢測被測物質(zhì)的整體響應(yīng)信號，輔以主成分分析數(shù)學(xué)方法的新型電子舌系統(tǒng)實(shí)驗(yàn)中采用鉑電極金電極鈀電極鈦電極鎢電極作為傳感器陣列，在110100Hz三個(gè)頻率段下進(jìn)行檢測，數(shù)據(jù)采用主成分分析的方法對六種不同的茶飲料進(jìn)行區(qū)分辨識結(jié)果顯示，鈦10Hz鎢100Hz組合電極能夠?qū)?X"種茶飲料有較好的區(qū)分辨識效果可見，多 頻脈沖電子舌在飲料的區(qū)分辨別真?zhèn)畏矫嬗泻艽蟮臐摿?關(guān)鍵詞：多頻脈沖電子舌，茶飲料，區(qū)分辨識 Discriminating of different kinds of tea beverage by multifrequency pulse electronic tongue NIU Haixia (Food Sensory Science Lab of Zhe極ang Gongshang University， Food Safety Key Lab of Zhe極ang Province，Hangzhou 3 10035，China) Abstract：Multifrequency pulse electronic tongue(MPET)is a novel electronic tongue with pulse voltammetry asthe scanning signal and the sensors array which is composed of unmodified metal sensor，it can determine theintegral characteristic response signal of the measured substance，the data is disposed by principal components analysis．In the paper，seven tea beverage was discriminated through a sensor array of platinum ，gold，palladium ，titanium and tungsten electrodes at different frequency of 1，10，100Hz by principal components analysis．Theresults showed that combining titanium 10Hz+tungsten i00Hz could successfully discriminate six tea beverage． Multifrequency pulse electronic tongue (MPET) displayed great application potential in tea beverage qualityexamination and fake tea beverage products discrimination quality examination and fake tea beverage productsdiscrimination． Key words：muIt汁requency pulse electronic tongue；tea beverage；discrimination 電子舌（智舌）