Suhandy, Diding and Yulia, Meinilwita and Kuncoro, Sapto and Rinaldo, Wahyu and KONDO, Naoshi and OGAWA, Yuichi (2010) The Measurement of Soluble Solids Content in Snake Fruit (Salacca Edulis Reinw) cv. Pondoh Using A Portable Spectrometer. In: 3rd IFAC Conference in Modelling and Control in Agriculture, Horticulture and Post-Harvest Processing - Agricontrol, 6-8 September 2010, Kyoto.
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The Measurement of Soluble Solids Content in Snake Fruit (Salacca Edulis Reinw) cv. Pondoh Using A Portable Spectrometer.pdf Download (227kB) | Preview |
Abstract
In this research we reported the use of n ear infrared sp ectroscopy fo r nondestructive soluble solids cont ent (SSC) measurement in in tact snake fruit (Salacca edulis Reinw) cv. Pondoh. The spectra of 100 sample s were acquired in the range of 300-1040 nm using an availa ble, low cost portable spectrometer (VISNIR USB4000) . The sp ectrometer used an array of linear CCD as a detector. The LS-1 Tungsten Halogen lamp is used as light so urce. This system is also equipped with a fibe r optic. Snake fruits were placed on the sample holder an d th e s pectra were measured us ing 100 ms o f integration time and 50 scans f or a veragin g. The spectra were acquired in two different positi ons in the mi ddle of fruit. The total scanning time was 10 s for each fruit. The SSC of sn ake fruits were measured destructively following th e spectra measurement usin g a dig ital refractome ter. A portion of sn ake fruit flesh with associated with th e point of spectra measurement was cut and juiced . T hen the juice of snake fruit was placed on a digital refractometer. The SSC was quantified i n Brix value. The t rial free ve rsion of The Unscrambler V.9.1 was used as chemom etrics tools to ex tract the useful information from th e spectra. The calibration model was developed using Partial Least Squares Regression 1 (PLSR1) for three types of sp ectra, original, smoothing and second deriva tive spectra. The calibration model was evaluated using some parameters such as coefficient of determination (R2), standard error of prediction (SEP), bi as be tween actua l and pr edicted SSC va lue and ratio prediction to deviation (RPD) pa rameter. The po ssibility of using near infrared spectroscopy to measure SSC of intact snake fruit nondestructively was successfully demonstrated. The best calibration model with 3.32 of RPD value could be obtained. Keywords: snake fruit, near infrared spectroscopy , i ntact fruit, soluble solids content, nondestructive method, rat io prediction t o de viatio
| Item Type: | Conference or Workshop Item (Paper) |
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| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Fakultas Pertanian (FP) > Prodi Teknik Pertanian |
| Depositing User: | KUNCORO SAPTO |
| Date Deposited: | 13 Oct 2021 10:13 |
| Last Modified: | 13 Oct 2021 10:13 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/34528 |
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