Determination of soluble solids and firmness of apples by Vis/NIR transmittance

被引：137

作者：

Fan, Guoqiang ^{[1
]}

Zha, Jianwen ^{[2
]}

Du, Ran ^{[2
]}

Gao, L. ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, 29 Yudao St, Nanjing 210016, Peoples R China

[2] Shandong Univ Technol, Coll Light Ind & Agr Engn, Zibo, Shandong, Peoples R China

来源：

JOURNAL OF FOOD ENGINEERING | 2009年 / 93卷 / 04期

关键词：

Near infrared spectroscopy; Fruit quality; Apple; Non-destructive analysis; degrees Brix; Firmness; NEAR-INFRARED-SPECTROSCOPY; SUGAR CONTENT; NONDESTRUCTIVE DETERMINATION; DIFFUSE-REFLECTANCE; BROWNHEART; QUALITY; FRUIT;

D O I：

10.1016/j.jfoodeng.2009.02.006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Firmness and soluble solids content (SSC) of Red Fuji apples were examined by Vis/NIR transmittance to find out factors to be considered in online detection. Four arrangements of light source and fruit-orientation were investigated. The wavelength range of 650-920 nm was selected and two types of data preprocessing were used to enhance the precision of calibration models based on partial least square (PLS). The results show the precision of determination can be improved by using second derivate. The best fruit-orientation was the stem-calyx axis was vertical and the fruit surface was illuminated from the upper side. The precision of determination was enhanced by using multi lamps. According to the high grade of apple to export (SSC >= 14 degrees Brix, firmness >= 8.0 kg/cm(2)). the classifying correctness was 86%. Validation models for SSC and firmness had a r(2) of 0.9532 and 0.8136, as well as. SEP of 0.3838 and 0.5344, respectively. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.

引用

页码：416 / 420

页数：5

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