Online measuring of quality changes of banana slabs during convective drying

Q2 Engineering

Engineering in Agriculture, Environment and Food Pub Date : 2019-01-01 DOI:10.1016/j.eaef.2018.10.004

Esmaeel Seyedabadi , Mehdi Khojastehpour , Mohammad Hossein Abbaspour-Fard

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引用次数: 12

Abstract

Color and shrinkage are two main quality attributes of dried banana. In this study, a hot air dryer equipped with a computer vision system (CVS) was employed for online monitoring of quality changes of banana during drying. Banana slices were dried at temperatures of 80, 90 and 100 °C and air velocities of 1.0 and 1.5 m/s. Drying took place entirely in the falling rate period. The results showed that the system could successfully measure and monitor the color and shrinkage evolutions of banana during drying. Air temperature had significant effect on drying time. For all temperatures, drying followed by decrease of the lightness (L*) and increase in the redness (a*) of banana samples but with no clear tendency of the yellowness (b*). It was found the total color difference (ΔE*) has a direct relation with drying temperature. Shrinkage showed almost a linear correlation with moisture ratio. Drying at higher temperatures led to more color changes but less shrinkage. Air velocity in the studied range had no significant effect on both color change and sample shrinkage.

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香蕉板对流干燥过程质量变化的在线测量

颜色和收缩率是干香蕉的两个主要品质指标。本研究利用装有计算机视觉系统(CVS)的热风干燥机对香蕉干燥过程中的品质变化进行在线监测。香蕉片在温度为80、90和100℃，风速为1.0和1.5 m/s的条件下干燥。干燥完全发生在下降速率期间。结果表明，该系统能够成功地测量和监测香蕉在干燥过程中的颜色和收缩变化。温度对干燥时间有显著影响。在所有温度下，干燥后香蕉样品的亮度(L*)下降，红度(a*)增加，黄度(b*)变化趋势不明显。发现总色差(ΔE*)与干燥温度有直接关系。收缩率与含水率基本呈线性相关。在较高的温度下干燥会导致更多的颜色变化，但较少的收缩。研究范围内的空气流速对样品的颜色变化和收缩率均无显著影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering in Agriculture, Environment and Food Engineering-Industrial and Manufacturing Engineering

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Engineering in Agriculture, Environment and Food (EAEF) is devoted to the advancement and dissemination of scientific and technical knowledge concerning agricultural machinery, tillage, terramechanics, precision farming, agricultural instrumentation, sensors, bio-robotics, systems automation, processing of agricultural products and foods, quality evaluation and food safety, waste treatment and management, environmental control, energy utilization agricultural systems engineering, bio-informatics, computer simulation, computational mechanics, farm work systems and mechanized cropping. It is an international English E-journal published and distributed by the Asian Agricultural and Biological Engineering Association (AABEA). Authors should submit the manuscript file written by MS Word through a web site. The manuscript must be approved by the author''s organization prior to submission if required. Contact the societies which you belong to, if you have any question on manuscript submission or on the Journal EAEF.