基于神经网络及电子鼻的虾夷扇贝鲜活品质评价及传感器的筛选

追踪检测虾夷扇贝品质变化过程中的存活指标,生理指标以及电子鼻气味图谱的变化,建立保活流通过程中不同等级的活品虾夷扇贝电子鼻气味指纹图谱,购买市场上不同状态的活品虾夷扇贝,分别通过学习向量量化(learning vector quantization,LVQ)、概率(probabilistic neural networks,PNN)、支持向量机(support vector machine,SVM)神经网络对测试样品快速模式分类,最后通过对电子鼻传感器的筛选探索便携式快速品质鉴别设备的可能性。研究结果表明,24 h的极端胁迫环境放置较为完整的模拟了虾夷扇贝在保活流通过程中状态变差的过程;将电子...

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Published in农业工程学报 Vol. 32; no. 6; pp. 268 - 275
Main Author 傅润泽 沈建 王锡昌 刘俊荣 倪锦 樊文
Format Journal Article
LanguageChinese
Published 上海海洋大学食品学院,上海201306%中国水产科学研究院渔业机械仪器研究所,上海,200092%上海海洋大学食品学院,上海,201306%大连海洋大学食品科学与工程学院,大连,116023 2016
中国水产科学研究院渔业机械仪器研究所,上海200092
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.06.037

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Summary:追踪检测虾夷扇贝品质变化过程中的存活指标,生理指标以及电子鼻气味图谱的变化,建立保活流通过程中不同等级的活品虾夷扇贝电子鼻气味指纹图谱,购买市场上不同状态的活品虾夷扇贝,分别通过学习向量量化(learning vector quantization,LVQ)、概率(probabilistic neural networks,PNN)、支持向量机(support vector machine,SVM)神经网络对测试样品快速模式分类,最后通过对电子鼻传感器的筛选探索便携式快速品质鉴别设备的可能性。研究结果表明,24 h的极端胁迫环境放置较为完整的模拟了虾夷扇贝在保活流通过程中状态变差的过程;将电子鼻数据主成分分析、聚类分析结果与存活指标(开口率、缩边率以及死亡率)和生理指标(超氧化物歧化酶活性、耗氧率以及海水浊度)相结合可以把品质变化过程中的虾夷扇贝分成5个等级,并分别得到每个等级的扇贝气味指纹图谱;3种神经网络均可以对测试样品等级进行快速测定,其中支持向量机(SVM)神经网络兼具精确和快速的特点,测试样本T全部预测为等级4,测试样本N全部预测为等级3,从交叉验证到仿真预测所用时间仅为7.652 s;筛选得到的8个电子鼻传感器也可以对不同等级鲜活虾夷扇贝气味特征进行有效区分。
Bibliography:11-2047/S
Optimization of live Yesso scallop transportation technology needs to establish an effective and special quality evaluation method, however, the complicated and variable physiological parameters of live creature make the quality difficult to identify. The objective of this study was to investigate whether an electronic nose, comprising 18 metal oxide Semiconductor gas sensors, could be used for measuring and modeling quality changes of Yesso scallop during live transportation, and to discuss the feasibility of portable rapid evaluation equipment for live Yesso scallop.Third instar live scallops, 8 ~12 cm, were purchased from a depuration workshop of Zhangzi Island, Dalian, China in May 2015. These scallops were just finished depuration and placed in stress environment(exposed in the air 24 h at 20 ℃, shocked and collided in a moving car), Samples were taken every 3 hours and recorded in chronological orderwere A, B, C, D, E, F, G, H,I and J, respectively. Two kinds of test scallops(T and N), 8~12 cm,
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.06.037