title: Penaeus orientolis prawn freshness rapid determination method based on electronic nose and non-linear stochastic resonance technique.
abstract: In this paper, Penaeus orientolis prawn freshness rapid determination method using electronic nose (e-nose) and non-linear data processing technique is studied. E-nose responses to prawns stored at 4 °C are measured. Meanwhile, physical/chemical indexes (firmness, pH, total volatile basic nitrogen (TVB-N), total viable count (TVC), and human sensory evaluation) are examined to provide freshness references for e-nose analysis. E-nose measurement data is analyzed by principal component analysis (PCA), stochastic resonance (SR), and double-layered cascaded serial stochastic resonance (DCSSR). PCA partially discriminates prawns under different storage time. SR and DCSSR signal-to-noise ratio (SNR) spectrum eigen values discriminate prawns successfully. Multi-variables regressions (MVR) are conducted between physical/chemical indexes and SR/DCSSR output SNR minimal (SNR-Min) values. Results indicate that SNR-Min values present more significant linearity relation with physical/chemical indexes. Prawn freshness forecasting model is developed via Harris fitting regression on DCSSR SNR-Min values. Validating experiments demonstrate that forecasting accuracy of this model is 94.29%.
authors.affiliation: a Zhejiang Gongshang University, Food Microbiology Key Laboratory of Zhejiang Province ; Hangzhou, China.
authors.forename: Liu
authors.initials: L
authors.lastname: Wei
authors.forename: Han
authors.initials: H
authors.lastname: Yuanyuan
authors.forename: Cai
authors.initials: C
authors.lastname: Yanping
authors.forename: Jin
authors.initials: J
authors.lastname: Jiaojiao
authors.forename: Hui
authors.initials: H
authors.lastname: Guohua
mesh_terms: D000328:Adult; D000818:Animals; D062609:Electronic Nose; D005260:Female; D005504:Food Analysis / Q000295:instrumentation / Q000379:methods*; D063427:Food Quality; D061353:Food Storage; D006801:Humans; D008297:Male; D033561:Penaeidae / Q000737:chemistry*; D011786:Quality Control; D012758:Shellfish / Q000032:analysis*; D012903:Smell
keywords: electronic nose; freshness; non-linear stochastic resonance; penaeus orientolis prawn; rapid determination