Effects of bruise type on discrimination of bruised and non-bruised 'Golden Delicious' apples by VIS/NIR spectroscopy

被引：39

作者：

Xing, J

Landahl, S

Lammertyn, J

Vrindts, E

De Baerdemaeker, J

机构：

[1] Katholieke Univ Leuven, Lab Agr Machinery & Proc, B-3001 Louvain, Belgium

[2] Katholieke Univ Leuven, Lab Postharvest Technol, B-3001 Louvain, Belgium

来源：

POSTHARVEST BIOLOGY AND TECHNOLOGY | 2003年 / 30卷 / 03期

关键词：

canonical discriminant analysis; impact; compression; bruise; apple; VIS/NIR spectroscopy;

D O I：

10.1016/S0925-5214(03)00117-0

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Visual (VIS) and near-infrared (NIR) spectroscopy was applied to discriminate bruises and non-bruised healthy spots on 'Golden Delicious' apples. Two types of bruises were examined; those created by controlled impact and those by compression. Reflectance spectra of apples were measured in the range from 400 to 1700 nm. The data were analysed with canonical discriminant analysis (CDA). The squared canonical correlation (CR2) was 0.74 for discriminating impact bruises and non-bruised tissue, and a CR2 of 0.68 was obtained for distinguishing compression bruises and sound tissue. Based on the linear discriminant functions, built with canonical components, the misclassification errors for non-bruised apples were mainly due to the presence of compression bruises. The classification accuracy was improved by taking the type of bruises into account in the model. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：249 / 258

页数：10

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