Tropical rhizomes and tuber crops (cassava, sweet potato, taro and yam) are also the main crops in developing countries, and the rapid urbanization of these developing countries has increased the demand for powdered food. The purpose of this study was to calibrate the near-infrared spectrometer during the measurement of conventional powdered foods and to test the accuracy of the main component content.
Summary
Tropical rhizomes and tuber crops (cassava, sweet potato, taro and yam) are also the main crops in developing countries, and the rapid urbanization of these developing countries has increased the demand for powdered food. Quality control technology is still evolving, while laboratory analysis is expensive. The purpose of this study was to calibrate the near-infrared spectrometer during the measurement of conventional powdered foods and to test the accuracy of the main component content. 472 powder samples (traditional quality and finished product lines) were prepared and analyzed for starch, total sugar, cellulose, total nitrogen and ash content (total mineral content). The near-infrared spectrum of all samples (350-2500 nm) was measured. The calibration equation was calculated using a partial least squares method that used cross-validation and external verification for all analytical characteristics. A quality prediction evaluation was performed on 94 test samples (20% of the total samples) by predictive standard error (SEP) and the r2 index between the measured and predicted values ​​derived from cross-validation. Starch, sugar and total nitrogen content can be predicted with confidence levels of 87%, 86% and 93%, respectively, however, the confidence level for grayscale (mineral) prediction is 71%, and cellulose cannot be predicted (r2 = 0.31) . The statistical parameters of starch, sugar and total nitrogen are very helpful in controlling the quality of powdered samples. The chemical composition of these powder samples is the most important in quantity, and the starch content is negatively correlated with the content of sugar and total nitrogen. Near-infrared spectroscopy is a low-cost technology that is well suited for use in developing countries and can be used to quickly screen large numbers of samples. More applications will be discussed further.
Http://
The
stationery set can be divided into Oxford cloth,Plush and PU according to the material. It
can be designed with digital printing, silk-screen printing, UV printing and
other printing methods and accessories. It is a combination of practicality and
aesthetic culture.
Stationery Set,PU Stationery Set,Plush Stationery Set,Oxford Stationery Set,Custom Stationery Set.
Jilin Y.F. Import & Export Co.,Ltd , https://www.jlyoufoundit.com