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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 22 Documents
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Search results for , issue "Vol 8, No 5 (2007)" : 22 Documents clear
PERTUMBUHAN DAN PERKEMBANGAN TUNAS Typhonium SECARA IN VITRO Djadja Siti Hazar Hoesen
BERITA BIOLOGI Vol 8, No 5 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i5.1905

Abstract

Study on shoots growth and development of Typhonium flagelliforme (Lodd.) Blume and T. trilobatum (L.) Schott were carried out by in vitro technique.These species produce tubers are used for cancer medication; also the whole parts of plants has been reported potential for traditional medicine. Chemicals isolated from from crude extract of whole plants of T.flagelliforme are methyl esters of hexedecanoic acid, octadecanoic acid, 9- octadecanoic acid and 9,12- octadecadienoic acid.The chemical contents inhibited/decreased the proliferation of human leukaemia cell lines in test.For medical and cosmetics industrial usage of the plants requires supply materials continously of which in turn necessitate its cultivation and planting. The planting materials can be produced efficiently by micro propagation or in vitro technique. The objective of the study was to evaluate the culture respond to the plant growth regulator (PGR) treatments effect. The experiment was designed with completely randomized designed (CRD).The study was indicated that proliferation of shoot were optimum in the growth medium was supplemented with N6-Benzyladenine (BA) 1mg/l and NAA 0,5 mg/l. Acclimatization stage and planted to the soil were successful, almost whole (90-95 %) plants were survive.
KOMUNITAS MIKROBA PENGAKUMULASI GLIKOGEN Dyah Supriyati; Rita Dwi Rahayu; Hartati Imamuddin
BERITA BIOLOGI Vol 8, No 5 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i5.1896

Abstract

Activated sludge originated from anaerobic-aerobic process waste water treatment plan was acclimated with glucose and acetate.The experiment was conducted in 1 L working volume of sequential batch reactor (SBR) that was adjusted to 0, 25 kg m day.Glucose was effectively utilized by microbial community in anaerobic condition, and glycogen synthesis was occurred in aerobic condition.Suppression of polyphosphate accumulating organism was caused by the domination of glycogen accumulating organism and the high of nitrate production. In order to accelerate the community polyphosphate accumulating organisms then to the competitor of these communities must be pressured.

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