Sensing the Moisture Content of Dry Cherries—A Rapid and Nondestructive Method

作     者：Chari Venkatkrishna Kandala Ramesh Avula Vijayasaradhi Settaluri Ronda Srinivasa Reddy Naveen Puppala 

作者机构：Department of Biotechnology K.L. University Vaddeswaram India New Mexico State University Clovis USA. R&D Cherry Central Traverse City USA United States Department of Agriculture Dawson USA 

出 版 物：《Food and Nutrition Sciences》 (食品与营养科学（英文）)

年 卷 期：2013年第4卷第9期

页      面：38-42页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Cherries Moisture Content Capacitance Impedance Phase Angle Regression CI Meter 

摘      要：Impedance (Z), and phase angle (θ) of a parallel-plate capacitor with a single cherry fruit between the plates were measured using a CI meter (Chari’s Impedance meter), at 1 and 9 MHz. Capacitance C was derived from Z and θ, and by using the C, θ, and Z values of a set of cherries whose moisture content (MC) values were later determined by the hot air-oven method, a calibration equation was developed. Using this equation, and their measured C, θ, and Z values, the MC of a group of cherries, not used in the calibration, was predicted. The predicted values were compared with their vacuum-oven values. The method worked well with an R2 value of 0.98 and a standard error of prediction (SEP) of 1.24, in the measured moisture range between 5% and 20%.