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All Journal Unesa Journal of Chemistry Jurnal Medicare
Hanif Rifqi Prasetyawan
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Health Professions Materials Science & Nanotechnology Nursing Public Health

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SKRINING FITOKIMIA DAUN TEH HIJAU (CAMELLIA SINENSIS L.) DAN BIJI LADA HITAM (PIPER NIGRUM L.) Sandhori, Fajar Jamaluddin; Hanif Rifqi Prasetyawan; Farida Istiqamah; Ilham Robbynoor Sulistiyono; Rizkiyatul Hasanah
Jurnal Medicare Vol. 4 No. 3: JULY 2025
Publisher : Rena Cipta Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62354/jurnalmedicare.v4i3.233

Abstract

Plants are the main source of secondary metabolites that have important biological potential. This study aims to screen the phytochemicals of green tea leaves and black pepper to identify the classes of active compounds contained within them. Extraction was performed using the maceration method with 96% ethanol over three days, followed by qualitative phytochemical testing (alkaloids, flavonoids, saponins, tannins, triterpenoids, steroids, polyphenols, and anthraquinones). Green tea leaves contain alkaloids, triterpenoids, flavonoids, polyphenols, and anthraquinones. Black pepper contains alkaloids, saponins, triterpenoids, steroids, and flavonoids, but does not contain polyphenols, tannins, or anthraquinones. The differences in the composition of active compounds indicate distinct therapeutic potentials in the two plants and support their use as natural medicinal ingredients.
Pengaruh Variasi Waktu Ekstraksi terhadap Rendemen dan Total Kurkuminoid Ekstrak Etanol 96% Temu Giring (Curcuma heyneana) menggunakan Metode Microwave-Assisted Extraction Nur Oktavia, Mutia; Hanif Rifqi Prasetyawan
Unesa Journal of Chemistry Vol. 14 No. 2 (2025): Vol 14 No 2 (2025)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ujc.v14n2.p63-69

Abstract

This study aimed to evaluate the effect of extraction time variations on the yield and total curcuminoids of 96% ethanol extract of temu giring (Curcuma heyneana) using the Microwave-Assisted Extraction (MAE) method. Extraction was performed at 20, 60, 120, and 150 seconds using an 800-watt microwave with a 1:10 (w/v) solvent ratio. Yield was calculated based on total solids, while total curcuminoids were quantified using UV-Vis spectrophotometry at 469 nm. The results showed an increase in yield from 2.40% (20 s) to 7.52% (150 s) and total curcuminoids from 2.3962 µg/mL to 5.9593 µg/mL. Statistical analysis indicated a significant difference between treatments (****p < 0, 0001). Based on the tested time range 150-second exteaction time was identified as optimum, maximizing cell rupture and solvent diffusion without compromising thermal stability of curcuminoids. Thus, extraction time plays a key role in optimizing green extraction of temu giring.
Co-Authors Farida Istiqamah Ilham Robbynoor Sulistiyono Nur Oktavia, Mutia Rizkiyatul Hasanah Sandhori, Fajar Jamaluddin