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INDONESIA
BUANA SAINS
Published by Universitas Tribhuwana Tunggadewi
ISSN : 14121638     EISSN : 25275720     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
BUANA SAINS p-ISSN : 1412-1638 | e-ISSN: 2527-5720 is a double-blind peer-reviewed, open-access journal, published by UNITRI PRESS. It publishes original and applied research in all areas of natural science. The Editorial goal is to provide a forum exchange and an interface between researchers and practitioners in any natural science related field.
Arjuna Subject : -
Articles 12 Documents
 1   2 
Search results for , issue "Vol 20, No 2 (2020)" : 12 Documents clear
PENGARUH PENGELOLAAN AIR DAN BAHAN ORGANIK TERHADAP PRODUKTIVITAS AIR DAN POTENSI HASIL PADI (Oryza sativa L.) Bagus Yulianto; Florentina Kusmiyati; Ali Pramono
BUANA SAINS Vol 20, No 2 (2020)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v20i2.2230

Abstract

The aim of this research was to evaluate the effect of water management and organic matter on water productivity and rice yield potential. The study was conducted at the Indonesian Agricultural Environment Research Institute located on Jl. Raya Jakenan - Jaken Km 05 Pati, Central Java from December 4, 2019 to March 27, 2020. The research was carried out using a factorial completely randomized design of 2 x 2 with 4 replications. The first factor was water management (continuous flooding (CF) as high as 5 cm and Alternate Wetting Drying (AWD). The second factor was organic matter (cow manure 3 tons/ha, and without organic matter). The results showed that the treatment of water management and organic matter produced a number of tillers, 1000 grain weight, and yield potential were not significantly different. Water management of alternate wetting  drying and organic matter of 3 tons/ha was able to produce higher average dry grain yields and consumed less water so that the value of water productivity  was higher than the treatment of continuous flooding water management
AKTIVITAS ANTIOKSIDAN EKTRAK METANOL DAN AIR TEH HERBAL POKAK ( Solanum torvum ) TERHADAP ANTIBAKTERI PATOGEN Nunuk Helilusiatiningsih
BUANA SAINS Vol 20, No 2 (2020)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v20i2.2237

Abstract

Pokak (Solanum torvum) can thrive in Indonesia and had high phytochemical and antioxidant compounds. The aim of this study was to analyze the effect of antioxidant compounds on herbal tea products, namely methanol extract of pokak herbal tea and water extract of pokak herbal tea on the inhibition of the growth of pathogenic bacteria. The herbal tea processing method uses surface response. The measured parameters were the total phenol content, tannins, flavonoids, and antioxidant activity (% DPPH Imbibition) and test for pathogenic bacteria inhibition zone using the disc method. The results showed that the best treatment was pokak green tea water extract containing 93.81% antioxidant activity (% DPPH inhibition), total phenol 55.20 mgGAE/g, tannin content 1.70 mgTAE/g, flavonoid levels 1.78 mgQAE/g. Analysis of pokak green tea water extract at a concentration of 100% had an inhibitory power against pathogenic bacteria E coli 20 mm, 20 mm MRSA, 20 ml Salmonella typhi, 19 mm Streptococcus pneumonia. Pokak green tea water extract can be used as a drink that functions for health in inhibiting the growth of pathogenic bacteria.

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