p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Agrointek
Eka Rahayu
Pusat Riset Teknologi dan Proses Pangan, Badan Riset dan Inovasi Nasional, Gunung Kidul

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

Prediksi umur simpan tepung beras ketan berdasarkan isotermi sorpsi air dengan persamaan Guggenheim-Anderson-deBoer Nikmatul Hidayah; Eka Rahayu
AGROINTEK Vol 18, No 4 (2024)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v18i4.20164

Abstract

Acceleration of the shelf life of glutinous rice flour can be determined using the moisture sorption isotherm method with a critical moisture content approach using the Guggenheim-Anderson-deBoer (GAB) model. This research was to determine the prediction of the shelf life of glutinous rice flour in different storage conditions based on moisture sorption isotherm using the GAB model. The stages of the research included determining the parameters of product damage, selecting the packaging, determining the storage condition (temperature 30℃ with humidity of 75%, 85%, and 90%), determining the time and frequency of sampling, data analysis, and prediction of product shelf life. The results showed that the ISA curve of glutinous rice flour had a sigmoid shape (type II). The GAB model accurately described the isotherm sorption characteristics of glutinous rice flour with a Mean Relative Determination of 4.06%. The slope was 0.21 with an R2 value of 0.9835. Generally, the shelf life of glutinous rice flour decreased due to the increasing of storage humidity. The prediction of the shelf life of glutinous rice flour with an initial moisture content of 11.30% and a critical moisture content of 16% with the storage humidity of 75%, 85%, and 90% were 133 days, 71 days dan 56 days, respectively. This research is expected to provide information about the shelf life of glutinous rice flour needed for product distribution and storage purposes.
Sifat kimia, dan fungsional mocaf (modified cassava flour) dengan perbedaan suhu dan waktu pregelatinisasi Saskia Fitriana; Nurud Diniyah; Achmad Subagio; Eko Priyantono; Eka Rahayu; Mahrus Irsyam
AGROINTEK Vol 20, No 2 (2026)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v20i2.30293

Abstract

Starch can be modified through physical treatment, particularly by using the pregelatinizing technique. Pregelatinizing is a hydrothermal modification process that involves heating starch beyond its gelatinization temperature. This treatment improves the physicochemical and functional characteristics of starch (MOCAF), thereby enhancing its performance in various applications. This study aims to determine the effect of temperature and pre-gelatinization time on the physicochemical and functional properties of pregelatinizing of MOCAF. The research method used a randomized block design (RBD) with two factors. The factor A was heating time (10, 15, and 20 minutes), and factor B was heating temperature (90, 100, and 1100C). The parameters of the observations made include syneresis, swelling power, solubility, Water Holding Capacity (WHC), Oil Holding Capacity (OHC), moisture content, ash content, starch content, amylose content, and amylopectin content with two repetitions. The best results showed the treatment of 20 minutes heating time and a temperature of 1100C with characteristics syneresis 0.45 ± 0.02 (g/g); swelling power 19.64 ± 0.41 (%); solubility 10.30 ± 0 .40 (%); WHC 235.52 ± 0.43 (%); OHC 159.13 ± 0.37 (%); moisture content 9.92 ± 0.08 ( %); amylopectin content 57.75±0.21 (%); amylose content 31.22±0.01 (%); and starch content 85.20±0.02 (%). Modification methods using pregelatinizing MOCAF with temperature treatment and heating time had a significant effect on syneresis, swelling power, solubility, WHC, OHC, moisture content, ash content, amylose content, starch content, and amylopectin content so, MOCAF with pregelatinizing can be widely used for applications in the food, cosmetic, pharmaceutical and paper industries.