Pectinase is an enzyme that could hydrolyze pectin into galacturonic acid. Natural pectinase was produced by microbes such as bacteria, yeast, fungi and Actinomycetes. Application of pectinase in industry were mainly in juice industry, textile, pulp, tea, cocoa and coffee fermentation. In this research, we conducted purification and characterization of pectinase produced by Aspergillus ustus BL5 in submerged fermentation using commercial pectin. The result showed that the optimum of pectinase production was reached at 120 hours fermentation process with specific activity 0.59 U/mg. The crude e…
Day length or photoperiod is a situation of replacement of light period to dark which able to control the flower initiation and also growth of crop. Rice is short day plant; if day length exceed the critical phase it will be late of flowering.The purpose of this experiment was to evaluate rice cultivars which differ in groups and agronomic characters to photoperiod.The experiment was done at two seasons in November 1997 and May 1998 at green house BB-BIOGEN Bogor. The total of 29 cultivars consist of 3 subspesies of javanica, indica and japonica type were used. The experiment was based on rand…
SAEFUDIN & R. SANTOSA.1986.The effect of nitrogen, phosphorous and potassium fertilizers on the growth of Ipomoea aquatica Forst. Berita Biologi 3 (5): 214-218.Experiments to study the effect of nitrogen, phosphorous and potassium fertilizers on the growth of Ipomoea aquatica, a leafy vegetable, were carried out on four sites, i.e. in the villages of Teluk, Karangklesem, Purwokerto Kulon and Sumampir of the district of Banyumas respectively. The rates of application used were 0, 125, 250 and 375 kg of urea, triple superphosphate or potassium chloride per ha. The nitrogen fertilizer increased s…
The study of the patterns of nematode infection on rodents in Lore Lindu, Central Sulawesi was carried out. A total of 52 rodents were examined. Of these rodents 37 (71.15 per cent) were found to harbour nematode parasites and 15 (28.85 per cent) were free.There were found 10 species of nematode: Subulura andersoni, Syphacia muris, Heterakis spumosa, Cyclodontostomum purvisi,Hepatojarakus malayae, Molinacuaria indonesiensis, Protospirura muris,Rictularia tani, Trichuris muris dan Nippostrongylus muris that found in intestine, stomach, cecum and liver.The kind of infections were single (17.31 p…
Pellacalyx is one of the genera in Rhizophoraceae, distributed from Myanmar, South China, Indonesia, Malaysia and the Philippines. In Indonesia, Pellacalyx can be found in the island of Sumatra, Kalimantan and Sulawesi. Eight species of Pellacalyx have been found in Indonesia, four of which them were from Kalimantan, i.e. P. axillaris, P. cristatus, P. lobbii and P. symphiodiscus. These four species generally grow in the primary and secondary forest, from lowland to an altitude of 1300 m above sea level. Information of Pellacalyx in Indonesia is still very limited , and rarely found in the w…
Menurut pendapat saya seharusnya NTT bisa lebih makmur daripada yang ada sekarang ini, tetapi sangat sayang sekali rupanya sumber daya alam yang sangat penting di sana itu tidak digunakan secara baik atau tidak dikelola secara baik. Oleh karena itu tidak bisa menyumbang untuk Pembangunan Daerah padahal altematif yang lain barangkali sangat sulit untuk ditawarkan. Kalau saya dengar tadi penjelasan, masalah yang pokok dari tanaman Cendana ini adalah bukan pada masalah teknis biologis; masalahnya adalah policy, kebijakan. Pemerintah Daerah melanjutkan apa yang telah dilakukan oleh Pemerintahan Ko…
Forest exploitation activities always brings some environmental problems such as reduction in individual plant or species biodiversity and some physical deterioration which lead to microclimate change.This study presenting the results of measurement of plant-water relations against a shrub plant (Sundanese) podolakan (Baccaurea sp.),a rare species in a degraded tropical forest land under gold mining pressure in Jampang,Pelabuhan Ratu, West Java.Results shows that no significant differences between plants growing in the degraded and non-degraded (natural) sites in their water relations aspects …
Recent demand of black soybean {Glycine max (L.) Merr.} seed has been rising for industrial raw material. A total of five promising lines of black soybean (9837/K-D-8-185, 9837/K-D-3-185-195, W/9837-D-6-220, 9837/K-D-3-185-82 and 9837/W-D-5-211) were evaluated for the potential yield at 18 soybean production centrals in West Java, East Java, Bali and West Nusa Tenggara, from 2004 until 2006..Variety of Cikuray (black soybean), Wilis (famous variety with high yield) and Burangrang (large seed size and short maturation day) were used as check varieties.The field experimental design for each loca…
Red rice is one corp that has genetic variation both based upon phenotype and genotype evaluation using moleculer markers for specific gene. A research objective is to identify genetic diversity using red rice specific molecular markers. Forty accessions of Indonesian local rice included 9 accessions of red rice germplasm were used as genetic materials for this research. Specific molecular markers (RC3, RC9 and RC12) for a pigment color found in rice seed were designed based on alignment sequence analysis to rc-bHLH gene, a transcription factor for prothocyanidine protein. Then these markers w…
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This research aimed to improve and enhance the learning process forward motion of the base roll. This type of research was classroom action research participations collaboration, by using two cycles. With a total of research subjects were 36 students, 20 male and 16 female. Data collection technique was done by observation and using the basic motion test assessment instruments roll forward. The results showed: the initial founding only achieve 33.33% mastery. In the first cycle with the use of tools, it obtained the learning completeness percentage of success increased to 63.89%, while the per…