Estimation of harumanis (Mangifera indica L.) sweetness using Near-Infrared (NIR) spectroscopy. IOP Conference Series: Materials Science and Engineering, 767. pp. 1-8. ISSN 1757-899X (2020)
Abstract
Harumanis mango quality demanded by consumers is depending on the sweetness level of the fruit. The sweetness is evaluated by brix percentage using refractometer as a representative factor correlated with near-infrared (NIR) spectroscopy spectral absorbance. NIR spectroscopy method of sampling have been tested to overcome the time consuming, complex chemical analysis more importantly invasive sampling methods in order to determine the sugar content in mangoes. Spectral absorbance data from range 941 nm to 1685 nm of mango skin is correlated with Brix reading then tested through five pre-processing techniques. Data calibration and prediction of both data is evaluated using Partial Least Square Regression (PLSR) model. In the final analysis, Unit vector normalization (UVN) technique has achieved as a best pre-processing technique for predicting results, with the coefficient of determination (R2) values of 0.9836 and root mean square error (RMSE) values of 0.3131. Overall, the correlation of NIRS absorbance data and Brix data can be obtained using PLSR model with UVN pre-processing technique. Henceforth, we can conclude that the NIRS method of sampling can be used to identify sugar content in Harumanis mango by using time saving, non-invasive and less laborious method of sampling
| Item Type: | Article |
|---|---|
| Keywords: | Harumanis mango, Brix percentage, Near-Infrared (NIR) spectroscopy, PLSR model (Partial Least Square Regression), Unit vector normalization (UVN) technique |
| Taxonomy: | By Niche > Harum Manis > Processing By Niche > Harum Manis > Quality By Niche > Harum Manis > Research |
| Local Content Hub: | Niche > Harum Manis |
| Depositing User: | Nur Hayati Abdul Satar |
| Date Deposited: | 21 Sep 2023 06:46 |
| Last Modified: | 21 Sep 2023 06:46 |
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