PENGGOLONGAN MANGGA CV ARUMANIS BERDASARKAN MUTU INTERNAL
ABSTRACT: The purpose of this
study was to assess NIRS method to classify mango cv Arumanis based on its
internal quality during cold storage. Reflectances of mango at harvest date
(H0), 12 days of storage (H12), and 22 days of storage were measured by using
NIRflex Spectrometer at wavelengths of 1000-2500 nm, followed by measurement of
physico chemical properties of mango (total soluble solid, total acid, TSS-acid
ratio, firmness and weight loss). Unsupervised Principal component analysis
(PCA) and pre treatment NIR spectra were performed on NIR spectra to classify
mango (H0, H12, H22) and mahalanobis distance was used to validate the results.
The result showed that reflectances of mango decreased during storage
indicating the increase of NIR absorption by internal compounds of mango. TSS,
TSS-acid ratio, and weight loss increased during storage as total acid and
firmness decreased. NIRS and PCA analysis with pretreatment of quantile
normalization and smoothing, and mahalanobis distance parameter could classify
mango of 0, 12 and 22 days of storage based on its internal quality with
accuracy of 87 %.
Penulis: Yunisa Tri Suci, I
Wayan Budiastra, Y. Aris Purwanto
Kode Jurnal: jppertaniandd150361
