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Journal : Biota

PENGARUH PROSES FERMENTASI KOMBUCHA DAUN SIRSAK (Annona muricata L.) TERHADAP KADAR VITAMIN C Ike Apriani
Biota Vol 3 No 2 (2017): Jurnal Biota 2017
Publisher : Faculty of Science and Technology Universitas Islam Negeri Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/Biota.v3i2.1323

Abstract

Kombucha is a fermented beverage of tea and sugar with a symbiotic culture of bacteria and yeast, consumed for its beneficial effect on human health.  Kombucha contains antioxidant activity compounds.Yet, many research studies have shown that Soursop leaves contain vitamin C, Vitamin E, beta carotene, and flavoloids.  The purpose of this study was to determine the activity levels of vitamin C kombucha tea leaves of the soursop, The research was conducted in September 2016 in Chemistry Laboratory of Biology Education Study Program, Teaching Training and  Ilmu Tarbiyah Faculty UIN Raden Fatah Palembang. The research method was an experimental laboratory using a Completly Randomized Design (CRD) with 2 factors, the first factor was fermentation days (0 day (F1), 4 day (F2), 8 day (F3) and 12 day (F4)), and the second factor was the levels of soursop leaf tea is used (0 gr (K1), 20 gr (K2), 40 gr (K3), and 60 gr (K4)) with 3 replications. The results showed that there is a very real influence and interaction between fermentation days and content of soursop leaf tea is used to the levels of vitamin C. The highest levels of vitamin C present in the sample F4K4 (12 day / 60 gr) of 343.79 mg / 100 mL, and lowest vitamin C levels in samples F4K1 (12 day / without leaves of the soursop) amounted to 36.37 mg / 100 mL. The conclusion of this research is long fermentation and content of soursop leaves influence on the vitamin C activity.
Plant Growth Regulators (PGRs) Study for Root and Bud Induction on Stem Cuttings of Stevia rebaudiana Apriani, Ike; Sonia Adiba; Dawani; Nurseha, Tito; Fatiqin, Awalul; Yessy Velina
Biota Vol 10 No 2 (2024): Jurnal Biota 2024
Publisher : Faculty of Science and Technology Universitas Islam Negeri Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/biota.v10i2.22022

Abstract

The Stevia plant is used as a low calorie natural sweetener known as"the sweet herb of Paraguay". Stevia leaves a higher level of sweetness than cane sugar. Stevia can be propagated by stem cutting techniques. Soaked of stem cuttings in Plant Growth Regulators (PGRs) auxin can promote the growth and development of Stevia. Research was conducted to determine the effect of commercial PGRs (Rootone-f) and natural PGRs from Shallot extract. This study used a complete randomized design with different concentrations, both Rootone-f (0, 100, 200, 300, 400 and 500 mg/L) and shallot extract (0, 0.5%, 1%, 1.5% and 2%). Observations were made after 6 weeks (42 days) of planting on several growth parameters (height of plant, number or buds, number of leaves, number of roots and length of roots). Commercial PGRs showed a significant effect on growth parameters. While natural PGRs of shallot showed a significant effect on height of growth parameters. The recommended concentration of commercial PGRs for Stevia rebaudiana Bertoni M. stem cuttings was 300 mg/L.