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All Journal Makara Journal of Science Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Bioteknologi & Biosains Indonesia
Hudiyono, Sumi
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

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Enzymatic Synthesis of Sucrose Polyester as Food Emulsifier Compound Handayani, Sri; Novianingsih, Ika; Barkah, Awaliatul; Hudiyono, Sumi
Makara Journal of Science Vol. 16, No. 3
Publisher : UI Scholars Hub

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Abstract

Sucrose polyester (SPE) is a carbohydrate ester compound that has diverse functions, from surfactant to low-calorie food products. Sucrose fatty acid ester with the degree of substitution 1-3 can be used as emulsifier in foods and cosmetics. The enzymatic synthesis of sucrose polyesters can be carried out using lipase in organic solvent and contain small amount of water. In this study sucrose esters were synthesized by esterification reaction between sucrose with fatty acids from coconut and palm oil using Candida rugosa lipase in n-hexane. Optimization esterification reaction was carried out for parameters of incubation time, temperature, and the ratio of the substrate. The optimum incubation time was at 18 hours for coconut oil and 12 hours palm oil, the optimum temperature was 30 o C for coconut and palm oil, and the mole ratio of fatty acid to sucrose was 40:1 for coconut oil and 64:1 for palm oil. Esterification products were characterized by FT-IR. The FT-IR spectrum showed the ester bond was formed as indicated by the wave number 1739.79/cm. Esterification products have 2 substitution degrees.
Utilization of Silica Gel for the Synthesis of Geranyl Laurate and Citronellyl Laurate Rosalina, Khoerunissa Novianti; Wukirsari, Tuti; Handayani, Sri; Hudiyono, Sumi
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 2 Year 2024 (August 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20159

Abstract

Geraniol and citronellol are monoterpenoid alcohols with diverse pharmacological activities. This research focuses on synthesized of geranyl laurate and citronellyl laurate using silica gel as an esterification catalyst. The FTIR peak spectra of silica gel showed that Si-OH, Si-O-Si group were observed. XRD showed that the silica gel is an amorphous phase. The reaction was conducted under reflux using a Dean–Stark trap. The reaction was monitored by TLC and then the product was purified using column chromatography. This work reported that silica gel can be utilized as a catalyst for preparing geranyl laurate and citronellyl laurate which proven by the spectra of FTIR, 1H-NMR, and 13C-NMR of the geranyl laurate and citronellyl laurate formed. The IR spectra of geranyl laurate and citronellyl laurate showed the presence of a carbonyl group (C=O) at 1744-1745 cm-1 and C-O from ester at 1170-1176 cm-1. The peak number and its chemical shift on 1H-NMR and 13C-NMR spectra further verified the structure of geranyl laurate and citronelyl laurate. In conclusion, silica gel can be utilized as a catalyst for preparing geranyl laurat and citronellyl laurate. Therefore a silica gel-based catalyst is promising to be developed for esterification applications.
OPTIMIZATION OF ENZYME-MICROWAVE ASSISTED EXTRACTION, CHARACTERIZATION AND ANTIOXIDANT ACTIVITY OF POLYSACCHARIDE FROM Ganoderma lucidum Listriyani, Lira Windriawati; Hudiyono, Sumi; Rudiyono, Rudiyono; Zulaeha, Siti; Wibisana, Ahmad
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 10 No. 1 (2023)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jbbi.2023.1748

Abstract

Enzyme-Microwave Assisted Extraction (EMAE) is a new process for extracting Ganoderma lucidum polysaccharides (GLPs). Cellic® CTec2 was chosen as an enzyme that assists in microwave extraction. The four variables involved in this study were enzyme concentration (%), enzymatic reaction time (minutes), solvent-to-solid ratio (mL/g), and microwave extraction time (minutes). This study showed that the enzyme concentration and solvent-to-solid ratio had a significant effect on the response in the range studied. Yield extraction of polysaccharides from experiments conducted at optimum conditions showed good agreement with the predictions from the model. The EMAE method showed a higher polysaccharide extraction yield than hot water extraction (HWE) method. GLPs from EMAE method had antioxidant activity of 79.47 ± 0.71% (DPPH) and 0.884 ± 0.013 mM Fe2+/L (FRAP), where these values were higher than those of the HWE method.
Co-Authors Ahmad Wibisana, Ahmad Barkah, Awaliatul Handayani, Sri Listriyani, Lira Windriawati Novianingsih, Ika Rosalina, Khoerunissa Novianti Rudiyono, Rudiyono Siti Zulaeha, Siti Sri Handayani Tuti Wukirsari