Characterization Of Sala Mango Quality Attributes Via Visible And Near Infrared Spectroscopy Techniques

Yahaya, Ommi Kalsom Mardziah (2015) Characterization Of Sala Mango Quality Attributes Via Visible And Near Infrared Spectroscopy Techniques. PhD thesis, Perpustakan Hamzah Sendut.

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Abstract

Fruits‟ growers and local agriculture authorities in general have increasingly realized the importance of acquiring fruits with high quality in order to satisfy the market demands, specifically the consumers. Therefore, quality evaluations of fresh fruits using optical technique through spectroscopy measurement have been developed to non-destructively assess and measure internal quality attributes of Sala mangoes. In this research, several approaches with different technique of measurements (i.e. reflectance and interactance) have been performed and their competences were compared using Jaz, QE 65000 and FieldSpec 3 spectrometers via visible and near infrared spectral as well as visible monochromatic measurement systems for measurement of firmness, soluble solid content (SSC) and acidity (pH). Judging from the prediction performance, MSC was found to be the best pre- processing technique prior to multiple linear regression (MLR) for firmness measurement using QE 65000 spectrometer via reflectance mode with a coefficient of determination (R 2 ) and root mean square error of prediction (RMSEP) at 0.857 and 1.005 kgf , respectively. For soluble solids content (SSC), SNV was found to be the best pre-processing technique with R 2 = 0.882 and RMSEP = 0.783˚Brix through measurement using QE 65000 spectrometer via interactance mode. For acidity (pH), D 1 was found to be the best pre-processing technique with R 2 = 0.879 and RMSEP = 0.13 pH through measurement using QE 65000 spectrometer via reflectance mode. The results also showed that the direct calibration transfer procedure has successfully implemented to predict the pH of intact Sala mango between similar and differently

Item Type: Thesis (PhD)
Subjects: Q Science > QC Physics > QC1 Physics (General)
Divisions: Pusat Pengajian Sains Fizik (School of Physics) > Thesis
Depositing User: Mr Hasmizar Mansor
Date Deposited: 29 Oct 2026 01:23
Last Modified: 02 Nov 2026 01:13
URI: http://eprints.usm.my/id/eprint/65196

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