Mutu Fisik Bubuk Kunyit (Curcuma domestica Val.) Hasil Pengeringan Microwave Berdasarkan Proses Blanching yang Berbeda
(Physical Quality of Curcuma domestica Val. Powder Based on Microwave Drying and Different Blanching Process)
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Dian Purbasari
Jurusan Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Jember, Indonesia
Ning Puji Lestari
Jurusan Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Jember, Indonesia
Farizha Rahmatiningtyas Hidayat
Jurusan Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Jember, Indonesia
DOI: https://doi.org/10.19184/j-agt.v17i01.28426
ABSTRACT
Curcuma domestica Val. is a kind of spice that can be processed become several kinds of processed products such as flavor and herb. The height of water content and water activity in Curcuma causes damage and decrease of curcuma quality. One of the correct handles to get qualified products with good quality and to decrease the damage is by doing blanching process and drainage using the microwave. This study aimed to determine the physical quality characteristics of dried turmeric based on the difference in microwave power and the type of blanching process. The experiment used in this study was a completely randomized design with two factors, namely: microwave power (307, 402, and 577 W) and types of blanching (hot water and steam). The data obtained was characteristic of the physical quality of turmeric powder comprising color, agglomeration angle, precipitation density, water absorption, and oil absorption. The result of the study indicated that the water content of fresh turmeric was between 92.11-94.41% and the dried turmeric was between 3.48-4.56%. The characteristic of physical quality of turmeric powder has brightness level (L) between 61.1-66.5; reddish level (a) between 13.2-18.; yellowish level (b) between 40.8-53.0; precipitation density between 0.31-0.36 g/cm3; agglomeration angle between 42.7o-46.1o; the water absorption between 4.6-5.8 mL/g; and the oil absorption between 1.43-1.63 mL/g. Microwave-dried turmeric powder with both blanching processes produced physical quality that met SNI 01-7084-1995 standards with brightness, reddish, yellowish level, bulk density, and agglomeration angle in steam blanching process higher than hot water blanching.
Keywords: completely randomized design, drying, hot water, steam, turmeric powder
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Published
25-06-2023
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Vol. 17 No. 1 2023: Jurnal Agroteknologi
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1-15
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Copyright (c) 2023 Jurnal Agroteknologi
How to Cite
Purbasari, D., Lestari, N.P., & Hidayat, F.R. (2023). Mutu fisik bubuk kunyit (Curcuma domestica Val.) hasil pengeringan microwave berdasarkan proses blanching yang berbeda. Jurnal Agroteknologi, 17(1), 1-15. https://doi.org/10.19184/j-agt.v17i01.28426
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