Browsing Hayati Journal of Biosciences by Title
Now showing items 37-56 of 302
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Characterization of Endophytic Diazotroph Bacteria Isolated from Rice
(2010)Attempt to extend the biological nitrogen fixation to important crops such as rice has been conducted by isolating endophytic diazotrophs from rice rhizosphere and roots. In this study, three bacterial isolates of R2, R4, ... -
Characterization of Extracellular Penicilin G Acylase Produced by A New Local Strain of Bacillus subtilis BAC4
(2008)Penicillin G acylase (PGA) which catalyses penicillin G hydrolysis reaction is a key enzyme for the industrial production of penicilin G derivatives used in therapeutics. A new local strain of Bacillus subtilis BAC4 was ... -
Characterization of Lipopolysaccharides of Bradyrhizobium japonicum KDR 15 Heavy Metal Tolerant
(2006)The lipopolysaccharide (LPS) of Bradyrhizobium japonicum KDR 15 heavy metal tolerant strain was isolated by miniphenol-water extraction and yielded LPS in phenol and water phase. The LPS KDR 15 was further characterized ... -
Characterization of Xylanase from Streptomyces spp. Strain C1-3
(2007)Xylan is the major constituent of hemi cellulose. Several enzymes are needed to hydrolyse xylan completely, including xylanase. Currently, there is an increasing use of this enzyme. This study was carried out to characterize ... -
Characterization of Xylanase Streptomyces spp. SKK1-8
(2006)Streptomyces spp. SKK1-8 producing xylanase was isolated from soil sample from Sukabumi West Java. The xylanase have an optimum condition at pH 6 and 50 oC. Addition of 5 mM Cu2+ decreased the xylanase activity up to about ... -
Chemotaxonomic Studies on the Genus Amomum Based on Chemical Components of Volatile Oils
(2002)The study was focused on six species of Amomum genus i.e. A. aculeatum Roxb., A. blumeanum Val., A. compactum Soland. ex Maton., A. longipes Val., A. roseum Benth. et Hook.f., A. truncatum Gagn., and one species of Elettaria ... -
Chitinase Activity in Healthy and Sclerotium rolfsii Infected Peanut
(2006)The objectives of this experiment were to analyze the endo- or exo-chitinase activities of healthy and Sclerotium rolfsii infected peanuts. The experiment analyzed 24 different peanut genotypes. Results of the experiment ... -
Chloroplast DNA Copy Number May Link to Sex Determination in Leucadendron (Proteaceae)
(2009)Leucadendron (Proteaceae) is a South African genus, the flowers of which have become a popular item in the Australian cut-flower industry. All species are dioecious. In general the female flowers are the more desirable as ... -
Cloning and Expression Analysis of a Giant Gourami Vasa-Like cDNA
(2011)Molecular marker is useful in the development of testicular cells transplantation for detecting donor-derived germ cells in the recipient gonad. In this study, a giant gourami (Osphronemus goramy) vasa-like gene (GgVLG) ... -
Cloning of Genomic DNA Flanking Transposon in the Nonpathogenic Mutant of Xanthomonas axonopodis pv. glycines M715
(2005)The objective of this work is to clone flanking DNA derived from Tn-5 mutagenesis of wild type strain Xanthomonas axonopodis pv. glycines as first step to clone and to identify the gene involved in pathogenicity mechanism. ... -
Cloning ORF2 Membrane Protein of Koi Herpesvirus Lake Toba Indonesian Isolate
(2009)Koi herpesvirus (KHV) caused significant morbidity and mortality in koi and common carp. KHV which showed strong antigenic property implied that KHV virion or proteins may be used as antigen to raise antibody or vaccine ... -
Clooning of araA Gene Encoding L-Arabinose Isomerase from Marine Geobacillus stearothermophillus Isolated from Tanjung Api, Poso, Indonesia
(2010)L-arabinose isomerase is an enzyme converting D-galactose to D-tagatose. D-tagatose is a potential sweetenersucrose substitute which has low calorie. This research was to clone and sequence araA gene from marine bacterial ... -
Clustering of Brown Planthopper Biotype Based on RAPD-PCR
(2005)Random amplified polymorphic DNA (RAPD) technique was used to differentiate two brown planthopper biotypes, that were multiplied in the greenhouse. Ten selected random decamer RAPD primers produced unique DNA band patterns ... -
The Comparative Ability of Antioxidant Activity of Piper crocatum in Inhibiting Fatty Acid Aoxidation and Free Radical Scavenging
(2010)The excessive number of free radicals in human body could increase lipid peroxides and causes a variety of degenerative diseases. Piper crocatum is a plant containing natural chemicals that may have an antioxidant ability ... -
Compost Extract of Vegetable Wastes as Biopesticide to Control Cucumber Mosaic Virus
(2010)In semiaerobic conditions, different composting processes of vegetable wastes have different characteristics. When compost extracts amended with the effective microorganism-4 (EM4, +E) and Pseudomonas aeruginosa Ch1 (+B) ... -
Conservation of Agroecosystem through Utilization of Parasitoid Diversity: Lessom for Promoting Sustainable Agriculture and Ecosystem Health
(2008)For many years, agricultural intensification and exploitation has resulted in biodiversity loss and threaten ecosystem functioning. Developing strategies to bridge human needs and ecosystem health for harmonization of ... -
Control of Fusarium Wilt of Chili with Chitinolytic Bacteria
(2010)Biological control of plant disease using antagonistic microorganism has been obtaining much attention and implemented for decades. One of the potential microorganisms used in this strategy is chitinolytic bacteria. ... -
Cucumber Mosaic Virus and Chili Veinal Mottle Virus Infection on Growth and Yield Component of Chilli
(2006)A research was undergone to study the effect of single and double infection of Cucumber Mosaic Virus (CMV) and Chili Veinal Mottle Virus (ChiVMV) on the growth and yield of five chilli cultivars, i.e. Prabu, Taro, Jatilaba, ... -
Current Research Status of Allelopathy
(2006)The term of allelopathy refers to chemical interactions (inhibitory or stimulatory) between plants, between plants and microorganisms, and between microorganisms. The wealth of information on the processes, procedures, and ... -
Cuscus (Phalangeridae) Hunting by Biak Ethnic Group in Surrounding North Biak Strict Nature Reserve, Papua
(2008)Study on cuscus hunting as a form of wildlife utilization by Biak ethnic group surrounding the North Biak Strict Nature Reserce (CABU) was carried out through direct observation and interview with hunter respondents and ...