MEGA SAFITHRI
Departement of Biochemistry, Faculty of Mathematic and Natural Science, Bogor Agricultural University

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Effect of Microencapsulation Techniques on Physical and Chemical Characteristics of Functional Beverage Based on Red Betel Leaf Extract (Piper crocatum) Safithri, Mega; Indariani, Susi; Yuliani, Rosalina
Jurnal Kimia Sains dan Aplikasi Vol 23, No 8 (2020): Volume 23 Issue 8 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (43.048 KB) | DOI: 10.14710/jksa.23.8.276-282

Abstract

Functional drinks based on red betel leaf extract have antioxidant activity, but they still have a bitter taste. This study aims to determine the effect of microencapsulation on phenol content, antioxidant activity, and sensory quality of functional drinks based on betel leaf extract. Microencapsulation of functional drinks was made using maltodextrin coatings with concentrations of 10% and 20%. Antioxidant activity was tested by the CUPRAC method. The ready to drink (RTD) functional drink has a total phenolic content and antioxidant activity of 782.30 ± 2.54 mg GAE/g and 1660.19 ± 31.67 µmol Tr/g, respectively. These values are higher than microencapsulated functional drinks with maltodextrin (MM). The microencapsulated functional drink with 10% maltodextrin coating (MM10) is the chosen formulation since it has the smallest particle size (1.283 µm), total phenolic content of 12.90 ± 0.01 mg GAE/g and antioxidant activity of 189.41 ± 1.88 µmol Tr/g. Microencapsulated functional drinks provide sensory quality that is not significantly different (p <0.05) from ready to drink (RTD) drinks.
Molecular Docking of Red Betel (Piper crocatum Ruiz & Pav) Bioactive Compounds as HMG-CoA Reductase Inhibitor Zaelani, Bella Fatima Dora; Safithri, Mega; Andrianto, Dimas
Jurnal Kimia Sains dan Aplikasi Vol 24, No 3 (2021): Volume 24 Issue 3 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.24.3.101-107

Abstract

Cholesterol plaque buildup in artery walls occurs due to oxidation of Low-Density Lipoprotein (LDL) molecules by free radicals, which are a risk factor for coronary heart disease. Piper crocatum contains active compounds that can act as HMG-CoA reductase inhibitors, such as flavonoids, alkaloids, polyphenols, tannins, and essential oils. This study aimed to predict the potential of Piper crocatum extract and fraction compounds as HMG-CoA reductase inhibitors by investigating the ligand affinity to the HMG-CoA reductase enzyme. Ligand and receptor preparation was conducted using BIOVIA Discovery Studio Visualizer v16.1.0.15350 and AutoDock Tools v.1.5.6. Molecular docking used AutoDock Vina, while ligand visualization and receptor binding used PyMOL(TM) 1.7.4.5.Edu. The receptor used was HMG-CoA reductase (PDB code: 1HWK) with atorvastatin as a control ligand. Catechin, schisandrin B, and CHEMBL216163 had the highest inhibition with affinity energies of -7.9 kcal/mol, -8.2 kcal/mol, -8.3 kcal/mol, respectively. Amino acid residues that played a role in ligand and receptor interactions were Ser684, Asp690, Lys691, Lys692.
Aktivitas Antioksidan dan Total Fenolik Minuman Fungsional Nanoenkapsulasi Berbasis Ekstrak Sirih Merah Safithri, Mega; Indariani, Susi; Septiyani, Dinie
Indonesian Journal of Human Nutrition Vol 7, No 1 (2020)
Publisher : Jurusan Gizi, Fakultas Kedokteran, Universitas Brawijaya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.ijhn.2020.007.01.7

Abstract

Abstrak Pengembangan minuman fungsional dari ekstrak sirih merah yang ditambahkan dengan beberapa ekstrak rempah telah dilakukan sebelumnya. Akan tetapi, hasil uji sensori masih tergolong rendah karena masih terdapat rasa pahit pada minuman fungsional tersebut. Penelitian ini bertujuan untuk mengembangkan minuman fungsional berbasis ekstrak daun sirih merah dengan teknologi nanoenkapsulasi dan mengevaluasi total fenolik, aktivitas antioksidan in vitro serta mutu sensori. Pembuatan minuman fungsional nanoenkapsulasi menggunakan carrier agent berupa gum arab dan maltodekstrin (1:3; 1:1; 3:1), sedangkan active agent berupa campuran ekstrak daun sirih merah dan rempah-rempah (kayu manis, jahe merah, jeruk nipis). Aktivitas antioksidan menggunakan metode CUPRAC. Hasil penelitian menunjukkan bahwa minuman ready to drink memiliki nilai total fenol (786,23±1,52 mg GAE/g) dan aktivitas antioksidan (1583,97±85,52 µM troloks/g ekstrak) lebih baik dibandingkan dengan minuman fungsional nanoenkapsulasi. Akan tetapi, minuman fungsional nanoenkapsulasi memberikan mutu sensori yang lebih disukai dibandingkan dengan minuman ready to drink. Nanoenkapsulasi dapat memperbaiki mutu sensori minuman fungsional sirih merah, tetapi menurunkan nilai total fenol dan aktivitas antioksidan in vitro. Kata kunci: gum arab, maltodekstrin, minuman fungsional AbstractThe development of functional drink from red betel extract which is added with several spice extracts has been previously conducted. However, the result of the sensory test was still not good because there was still a bitter taste in the functional drink. This study aimed to develop functional drink based on red betel extract with nanoencapsulation technology and evaluate total phenolic, in vitro antioxidant activity, as well as sensory value. The nanoencapsulated functional drink was made from carrier agent, which were arabic gum and maltodextrin (1:1; 1:3; 3:1), while the active agent were a mixture of red betel extract and spices (cinnamon, red ginger, lime juice). Antioxidant activity used the CUPRAC method. The result showed that ready to drink (RTD) drink which had a total phenolic value (786.23±1.52 mg GAE/g) and antioxidant  activity (1583.97±85.52 µM trolox/g extract), was better than the nanoencapsulated functional drink. However, nanoencapsulated functional drink provide sensory quality which is more preferable than the RTD drink. The nanoencapsulated technology could improved sensory value of red betel functional drink, but it decreased total phenolic value and antioxidant activity in vitro. Keywords: arabic gum, functional drink, maltodextrin
Antibacterial activity of Stichopus hermanii and Stichopus variegatus methanol extract Susanto, Hendra; Safithri, Mega; Tarman, Kustiariyah
Current Biochemistry Vol. 5 No. 2 (2018)
Publisher : IPB University

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Abstract

Since 500 years ago sea cucumber has been used as wound healing medicine. Sea cucumbers are thought to function as a cell growth factor and have the potential as an antibacterial agent. This study aims to determine whether the methanol extract of sea cucumber has antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa so that it can be used to help diabetic wound healing of people infected with the same bacteria. The extraction method used was maceration with methanol to dried frozen simplicia. The simplicia was obtained by freeze drying to liquid preparation of heated fresh sea cucumber. The antibacterial activity test was performed using well diffusion method. There were no any antibacterial activity found in the two methanol extracts of sea cucumber. Keywords: antibacterial agent, Stichopus hermanii, Stichopus variegatus
Identification of Bioactive Compounds and α-Glucosidase Inhibition Activity of Caesalpinia bonduc Seed Extract In vitro Dwitasari, Oczhinvia; Hami Seno, Djarot Sasongko; Safithri, Mega
Current Biochemistry Vol. 5 No. 2 (2018)
Publisher : IPB University

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Abstract

This study is aimed for finding alternative ways to treat diabetes. Many studies have beendone before, but focused on identification of α-glucosidase inhibition mechanism. This study wasconducted by extracting Caesalpinia bonduc seed using two methods maceration by ethanol 96%and the others boil by water. The ethanol extract was then fractioned into three fractions, n-hexane,ethyl acetate, and ethanol. To find the bioactive compounds, the ethanol extract was then tested byseveral phytochemistry tests. The phytochemistry test showed positive results for alkaloid, flavonoid,saponin and triterpenoid. The inhibition mechanism was tested using pNPG. The inhibition testshown that the mechanism was a competitive inhibition, by the Dixon plot. The calculated inhibitionconcentrations for 50% substrate (IC50) for ethyl acetate fraction are 1655.8079 μg/ml for 5 mMsubstrate and 803.9521 μg/ml for 10 mM substrate. From the results of this study, we concluded thatthe extract of Caesalpinia bonduc has inhibition activity toward α-glucosidase enzyme. Keywords: α-glucosidase inhibition, Caesalpinia bonduc seed extract, diabetes treatment
In Silico Screening of Cinnamon (Cinnamomum burmannii) Bioactive Compounds as Acetylcholinesterase Inhibitors Syarafina, Zatta Yumni Ihdhar; Safithri, Mega; Bintang, Maria; Kurniasih, Rini
Jurnal Kimia Sains dan Aplikasi Vol 25, No 3 (2022): Volume 25 Issue 3 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.25.3.97-107

Abstract

Alzheimer’s is a progressive and neurodegenerative disease that mainly affects people aged 65 years and older. The pathophysiology of Alzheimer’s is possibly related to the depletion of the neurotransmitter acetylcholine (ACh) due to beta-amyloid plaques and neurofibrillary tangles. Secondary metabolites found in cinnamon bark (Cinnamomum burmannii) have the potential as anticholinesterases to treat Alzheimer’s symptoms. This study aimed to identify the potency of bioactive compounds from cinnamon bark as AChE inhibitors in silico through analysis of binding energy, inhibition constants, and types of interactions. The research was conducted by screening virtually 60 test ligands using the PyRx program and molecular docking using the Autodock Tools program. The results of the ligand-receptor interaction analysis showed that 12 of the 15 tested ligands had potential as AChE inhibitors. Epicatechin and medioresinol are the ligands with the best potential for AChE inhibition with affinity close to the natural ligand or donepezil. Epicatechin has a binding energy of −10.0 kcal/mol and inhibition constant of 0.0459 M, with four hydrogen bonds and seven hydrophobic bonds. Meanwhile, medioresinol has −9.9 kcal/mol binding energy and inhibition constant of 0.0543 M, with one hydrogen bond and thirteen hydrophobic bonds.