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Physicochemical Properties and Sensory Acceptability of Fermented Roasted Robusta Coffee (Coffea canephora L.) Beans Chan, Hao Yuan; Rukayadi, Yaya; Azman, Ezzat Mohamad; Ashari, Rozzamri; Lim, Sarina Abdul Halim
Journal of Engineering and Technological Sciences Vol. 56 No. 3 (2024)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2024.56.3.7

Spontaneous fermentation is becoming ever more elusive because of vast natural microbiota profiles that affect geographical region, climate, and applications of agrichemicals. This study aimed to identify the physicochemical and sensory properties of local planted (Serdang, Malaysia) Robusta (Coffea canephora L.) coffee beans after undergoing different spontaneous wet fermentation (SWF) periods i.e., 0 days as control, 3 days, and 5 days. The hardness decreased significantly (p < 0.05) by 80 to 90% in roasted fermented roasted Robusta coffee (FRRC) beans. The carbohydrate content was significantly higher (p < 0.05) at 9.4%, but protein and crude fibers were significantly (p < 0.05) lower at 31% and 9.7%, respectively. While the FRRC brew displayed deeper lightness (L*31.983), the FRRC powder displayed lighter lightness (L*49.553). The total soluble solid (TSS) was around 21% higher in FRRC and the water solubility index (WSI) had equivalent outcomes at about 8% higher in FRRC. Rheological analysis showed that the coffee fluid exhibited a shear-thickening property with fluid elastic components greater than viscosity. FRRC beans received higher ratings (score > 6) than non-FRRC beans (score between 5 and 6) in the consumer sensory evaluations.

Combination of Chitosan from Black Soldier Fly Exuviae and Palm Oil Stearin as Coating on Chicken Eggs Muheri Indra Aja Nasution; Yaya Rukayadi
Jurnal Peternakan Integratif Vol. 14 No. 01 (2026): Jurnal Peternakan Integratif
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpi.v14i01.25287

Consumption chicken eggs have perishable properties, the quality of eggs will decline faster and the shelf life of eggs is very short at room temperature compared to cold temperatures. The purpose of this study is to test and evaluate the use of chitosan derived from black soldier fly exuviae and palm oil stearin as a coating on the quality of consumption chicken eggs at room temperature storage. Study design was a Completely Randomized Design (CRD) 4 x 5 factorial pattern with three replications. Each replicate consisted of 6 fresh chicken eggs, resulting in 360 eggs. Factor I was formula dosage (CS0 = Without Coating; CS1 = Virgin Coconut Oil; CS2 = 1.5% Chitosan + 1% Stearin; CS3 = 3% Chitosan + 1% Stearin) and Factor II was storage duration (ST0 = 0 Days; ST14 = 14 Days; ST28 = 28 Days; ST42 = 42 Days; ST56 = 56 Days). The results of the study indicate that the formula dose and storage time had a very significant effect (P<0.01) on the Haugh unit, albumen index, and yolk index of consumption chicken eggs. There was an interaction between the formula dose and storage time (P<0.01) on the Haugh unit, albumen index, and yolk index. Coating combination of chitosan BSF exuviae and palm oil stearin can maintain the quality of consumption chicken eggs during the storage period up to 56 days. The use of a coating formula with a treatment level of 3% chitosan + 1% stearin showed the best results in maintaining the quality of consumption chicken eggs during storage at room temperature and was still in quality category III according to SNI No.3926:2023, namely haugh unit 60.54%, albumen index 0.06% and yolk index 0.33%.

Combination of Chitosan from Black Soldier Fly Exuviae and Palm Oil Stearin as Coating on Chicken Eggs Muheri Indra Aja Nasution; Yaya Rukayadi
Jurnal Peternakan Integratif Vol. 14 No. 01 (2026): Jurnal Peternakan Integratif
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpi.v14i01.25287

Consumption chicken eggs have perishable properties, the quality of eggs will decline faster and the shelf life of eggs is very short at room temperature compared to cold temperatures. The purpose of this study is to test and evaluate the use of chitosan derived from black soldier fly exuviae and palm oil stearin as a coating on the quality of consumption chicken eggs at room temperature storage. Study design was a Completely Randomized Design (CRD) 4 x 5 factorial pattern with three replications. Each replicate consisted of 6 fresh chicken eggs, resulting in 360 eggs. Factor I was formula dosage (CS0 = Without Coating; CS1 = Virgin Coconut Oil; CS2 = 1.5% Chitosan + 1% Stearin; CS3 = 3% Chitosan + 1% Stearin) and Factor II was storage duration (ST0 = 0 Days; ST14 = 14 Days; ST28 = 28 Days; ST42 = 42 Days; ST56 = 56 Days). The results of the study indicate that the formula dose and storage time had a very significant effect (P<0.01) on the Haugh unit, albumen index, and yolk index of consumption chicken eggs. There was an interaction between the formula dose and storage time (P<0.01) on the Haugh unit, albumen index, and yolk index. Coating combination of chitosan BSF exuviae and palm oil stearin can maintain the quality of consumption chicken eggs during the storage period up to 56 days. The use of a coating formula with a treatment level of 3% chitosan + 1% stearin showed the best results in maintaining the quality of consumption chicken eggs during storage at room temperature and was still in quality category III according to SNI No.3926:2023, namely haugh unit 60.54%, albumen index 0.06% and yolk index 0.33%.

Effects of Extraction Temperature on the Total Protein and Vitamin C Levels of Channa striata Water Extract Restiasari, Anggi; Aulifa, Diah Lia; Febrianti, Raden Maya; Rosdianto, Aziiz Mardanarian; Rukayadi, Yaya; Levita, Jutti; Diantini, Ajeng
Indonesian Journal of Pharmaceutical Science and Technology Vol 13, No 2 (2026)
Publisher : Indonesian Journal of Pharmaceutical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/ijpst.v13i2.65682

Channa striata are a freshwater fish, popularly known as snakehead fish in Indonesia, belonging to the family Channidae. The fish are usually consumed for their protein and their medicinal properties in treating wounds and pain. Previous study showed that the protein in C. striata can be extracted using water at 50 °C for 60 minutes, and using acetone at 4°C for 24 hours. Considering all, this work aims to investigate the effects of temperature on the protein and vitamin C content of the water extract from C. striata fish collected in Rancaekek, West Java. The meat was extracted with water at 55-60 °C for 10 and 30 minutes, compared to the cold extraction at room temperature for 60 minutes. The resulting extracts were subjected to the qualitative Biuret color test and quantitative protein analysis using the Kjeldahl Method. The study revealed that cold extraction of C. striata meat for 60 minutes resulted in the highest protein content (0.29% in the residue and 0.35% in the supernatant). Moreover, the vitamin C levels, determined using the iodometric method, in the homogenate, supernatant, and residue were 60.64 mg/100 g, 60.82 mg/100 g, and 43.38 mg/100 g respectively.

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