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Nikmans Hattu
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics

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Effect of Drying Temperature on Oil Recovery and Protein Concentration of Rhynchophorus bilineatus as a Sustainable Local Food Resource Badaruddin, Sabrianah; Alif Nur Laili Rachmah; Tamaratritania Citta Trisnantari; Geraldi Rahanra; Muhammad Ikhsan Taipabu; Nikmans Hattu; Delpina Nggolaon; Ervina Rumpakwakra; Gede Wiratma Jaya; Farida Diyah Hapsari; Esther Mutiara Santallum Ekklesia Tibalia; Vanesya de Fretes
BERKALA SAINSTEK Vol. 14 No. 3 (2026)
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v14i3.60049

Abstract

The utilization of local biological resources such as sago grub (Rhynchophorus bilineatus) has attracted attention as an alternative source of oil and protein. However, its high moisture content requires appropriate drying treatment to improve processing efficiency. This study evaluated the effect of drying temperature as a thermal pretreatment on moisture reduction, solvent-free mechanical oil recovery, and protein concentration of press cake from Rhynchophorus bilineatus. Fresh sago grubs were dried at 80°C and 105°C for 18 hours, followed by oil extraction using a solvent-free mechanical press. Moisture content, oil yield, and protein concentration of the samples were analyzed, and statistical analysis was performed using One-Way Analysis of Variance (ANOVA). The results showed that drying temperature significantly affected the measured parameters (p < 0.0001). Drying at 80°C resulted in a higher oil yield (39.36%) compared with 105°C (26.14%). The protein concentration of the press cake from the 80°C treatment reached 39.60%, slightly higher than that from the 105°C treatment (38.30%). These findings indicate that drying temperature influences the processing characteristics of sago grubs, with 80°C providing higher oil yield and protein concentration among the evaluated drying conditions.
Co-Authors Alif Nur Laili Rachmah Badaruddin, Sabrianah Delpina Nggolaon Ervina Rumpakwakra Esther Mutiara Santallum Ekklesia Tibalia Farida Diyah Hapsari Gede Wiratma Jaya Geraldi Rahanra Muhammad Ikhsan Taipabu Tamaratritania Citta Trisnantari Vanesya de Fretes