cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota adm. jakarta selatan,
Dki jakarta
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 15 Documents
 1   2 
Search results for , issue " Vol 8, No 6 (2007)" : 15 Documents clear
PRODUKSI KITINASE EKSTRASELULER Aspergillus rugulosus 501 SECARA OPTIMAL PADA MEDIA CAIR Widhyastuti, Nunuk
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (407.982 KB) | DOI: 10.14203/beritabiologi.v8i6.839

Abstract

Chitinases hydrolyzing chitin are produced by various organisms and their physiological functions depend on their sources.Chitinases and its hydrolysis products have a broad range of applications. Increasing commercial interest in chitinase and its products has led to the need of inexpensive, reliable sources of active and stable chitinase preparations.The activity of chitinase produced by Aspergillus rugulosus 501 in liquid culture and the parameters that controlled the enzyme synthesis were studied to find optimal conditions for the enzyme production. Hydrolysis products of chitinase were detected by Reissig method. The results showed that fungal chitinase activity in media containing organic nitrogen and phosphate was higher than that in media containing trace element, organic and anorganic nitrogen but lack of phosphate. The maximum enzyme activity reached in the second day incubation.Chitinase production was affected by the initial pH of media, chitin consentration and source of nitrogen, while the consentrasion of inoculum used in this study did not affect enzyme production. High enzyme activity was found in media with initial pH 5.0-6.5. When using different consentration of colloidal chitin, chitinase activities were also found high in concentration from 0.75% tol .5%. The organic nitrogen sources gave the better results compared to the anorganic ones.
KAJIAN ILMIAH IKAN PELANGI {Marosatherina ladigesi (Ahl 1936)} FAUNA ENDEMIK SULAWESI Hadiaty, Renny Kurnia
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (414.276 KB) | DOI: 10.14203/beritabiologi.v8i6.827

Abstract

Marosatherina ladigesi is one of the famous rainbow fish species from Sulawesi.This endemic fish species from Sulawesi is one of the Indonesian export commodity since more than 30 years ago.All of the export specimens come from the wild habitat.The anxiousness of the extinction of this species stated in the redlist of IUCN since 1994. Two field work of Maros Karst Project conducted in 2006, 2007 and an international expedition in 2007 showed the decreasing population of this species.The results of the three field trips showed the difficulties to get M. ladigesi in the streams.Taxonomical status and classification, coloration, sex dimorphism and distribution discussed.
EFEKTOKSISITAS BIJI KEMALAKIAN (Croton tiglium) TERHADAP MENCIT DAN ANJING Yuningsih, Yuningsih; R, Damayanti
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.302 KB) | DOI: 10.14203/beritabiologi.v8i6.835

Abstract

Study in attempt to substitute commercial imported strychnine for elimination wild dogs in rabies disease program with Kimalakian (Croton tiglium) seeds has been conducted. This research was aimed to examine the destructive effect of croton seed petroleum extract (oil) in mice. There were 50 mice divided into 5 treatment groups. Each group was given (orally) 0.05, 0.10, 0.20, 0.40 and 0.80 ml oil/mice respectively and 1 group (10 mice) was blank. After the animal died necropsy was performed and gross pathological and hystopathological features were observed. The results showed that LD!0: 1.66 ml of oil/kg b.w. on mice. Furthermore, it was applied to dogs (b.w. 3kg) with dose: 2.5 ml, 5.0 ml and 10 ml oil/dog respectively. All dogs became hyperactive within few minutes, then dead after dosing 5.0 and 10.0 ml oil. Gross lesion in mices and dogs showed general congestion and hemorrhage in the lung, heart and liver. Histopathologically, the gastric mucosa was atropic resulted from gastric malfunction as leading to death.
MUTASI STRUCTURAL INTRON trnL (UAA) PADA SUKU MERANTI-MERANTIAN (DIPTEROCARPACEAE) Yulita, Kusumadewi Sri
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.353 KB) | DOI: 10.14203/beritabiologi.v8i6.823

Abstract

tRNA " UAA (trnL) intron have been widely utilised for phylogenetic reconstruction in angiosperm families. Two main helical elements of secondary structure of trnL intron (stem loop regions P6 and P8) contained the most variable sequences across taxa.Detailed examination on the insertion-deletion events in trnL intron sequences of 110 species of Dipterocarpaceae has identified 4 stem loop structures within both loops.The first stemJoqp was found in P6 loop and three other were discovered in P8 loop.These structures featuring characteristic for genericJinfra-generic level depended upon which taxonomic classifications are foJJowed.One of these structures formed a large loop of 72 nucleotides and was a unique major stem loop in Dipterocarps family whose loop was the major structural mutation of trnL intron in this family.
PROTEIN TOKSININSEKTISIDAL DARI BAKTERI PATOGEN SERANGGA Photorhabdus luminescens HJ Akhdiya, Alina; Pratiwi, Etty; Samudra, I Made
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.996 KB) | DOI: 10.14203/beritabiologi.v8i6.828

Abstract

Photorhabdus luminescens HJ is an entomopathogenic bacterium that has a high toxicity against Tenebrio molitor larvae.Toxicity assay of crude extra cellular protein precipitated using ammonium sulphate showed that the highest toxin activity was found in 70 % saturation. Purification of the toxin using Hi Prep 16/60 Sephacryl S-200 HR column exhibited one fraction of toxic protein and three fractions of non-toxic protein. Mortality of T. molitor larvae treated with 19.2 nanogram of toxic fraction was up to 80%. Denatured protein analysis using sodium dodecyl sulphate-polyacrylamide gel electrophoresis revealed that the toxic fraction was composed of three proteins, which were 19.5, 42, and 66 kDa respectively. Based on toxin activity bioassay, this toxin type was an injectable toxin and presumably classified as Mcf toxin.

Page 2 of 2 | Total Record : 15

 1   2 

Filter by Year

2007 2007


Reset
Filter By Issues
All Issue Vol 21, No 3 (2022): Berita Biologi Vol 21, No 2 (2022): Berita Biologi Vol 21, No 1 (2022) Vol 21, No 3 (2021): Berita Biologi Vol 20, No 2 (2021): Berita Biologi Vol 20, No 1 (2021) Vol 19, No 3A (2020) Vol 19, No 3B (2020) Vol 19, No 2 (2020) Vol 19, No 1 (2020) Vol 18, No 3 (2019) Vol 18, No 2 (2019) Vol 18, No 1 (2019) Vol 18, No 1 (2019) Vol 17, No 3 (2018) Vol 17, No 3 (2018) Vol 17, No 2 (2018) Vol 17, No 2 (2018) Vol 17, No 1 (2018) Vol 17, No 1 (2018) Vol 16, No 3 (2017) Vol 16, No 3 (2017) Vol 16, No 2 (2017) Vol 16, No 2 (2017) Vol 16, No 1 (2017) Vol 16, No 1 (2017) Vol 15, No 3 (2016) Vol 15, No 3 (2016) Vol 15, No 2 (2016) Vol 15, No 2 (2016) Vol 15, No 1 (2016) Vol 15, No 1 (2016) Vol 14, No 3 (2015) Vol 14, No 3 (2015) Vol 14, No 2 (2015) Vol 14, No 2 (2015) Vol 14, No 1 (2015) Vol 14, No 1 (2015) Vol 13, No 3 (2014) Vol 13, No 3 (2014) Vol 13, No 2 (2014) Vol 13, No 2 (2014) Vol 13, No 1 (2014) Vol 13, No 1 (2014) Vol 12, No 3 (2013) Vol 12, No 3 (2013) Vol 12, No 2 (2013) Vol 12, No 2 (2013) Vol 12, No 1 (2013) Vol 12, No 1 (2013) Vol 11, No 3 (2012) Vol 11, No 3 (2012) Vol 11, No 2 (2012) Vol 11, No 2 (2012) Vol 11, No 1 (2012) Vol 11, No 1 (2012) Vol 10, No 6 (2011) Vol 10, No 6 (2011) Vol 10, No 5 (2011) Vol 10, No 5 (2011) Vol 10, No 4 (2011) Vol 10, No 4 (2011) Vol 10, No 3 (2010) Vol 10, No 3 (2010) Vol 10, No 2 (2010) Vol 10, No 2 (2010) Vol 10, No 1 (2010) Vol 10, No 1 (2010) Vol 9, No 6 (2009) Vol 9, No 6 (2009) Vol 9, No 5 (2009) Vol 9, No 5 (2009) Vol 9, No 4 (2009) Vol 9, No 4 (2009) Vol 9, No 3 (2008) Vol 9, No 3 (2008) Vol 9, No 2 (2008) Vol 9, No 2 (2008) Vol 9, No 1 (2008) Vol 9, No 1 (2008) Vol 8, No 6 (2007) Vol 8, No 6 (2007) Vol 8, No 5 (2007) Vol 8, No 5 (2007) Vol 8, No 4(a) (2007) Vol 8, No 4 (2007) Vol 8, No 4(a) (2007) Vol 8, No 4 (2007) Vol 8, No 3 (2006) Vol 8, No 3 (2006) Vol 8, No 2 (2006) Vol 8, No 2 (2006) Vol 8, No 1 (2006) Vol 8, No 1 (2006) Vol 7, No 6 (2005) Vol 7, No 6 (2005) Vol 7, No 5 (2005) Vol 7, No 5 (2005) Vol 7, No 4 (2005) Vol 7, No 4 (2005) Vol 7, No 1&2 (2004) Vol 7, No 1&2 (2004) Vol 7, No 3 (2004) Vol 7, No 3 (2004) Vol 6, No 6 (2003) Vol 6, No 6 (2003) Vol 6, No 5 (2003) Vol 6, No 5 (2003) Vol 6, No 4 (2003) Vol 6, No 4 (2003) Vol 6, No 3 (2002) Vol 6, No 3 (2002) Vol 6, No 2 (2002) Vol 6, No 2 (2002) Vol 6, No 1 (2002) Vol 6, No 1 (2002) Vol 5, No 6 (2001) Vol 5, No 6 (2001) Vol 5, No 5 (2001) Vol 5, No 5 (2001) Vol 5, No 4 (2001) Vol 5, No 4 (2001) Vol 5, No 3 (2000) Vol 5, No 3 (2000) Vol 5, No 2 (2000) Vol 5, No 2 (2000) Vol 5, No 1 (2000) Vol 5, No 1 (2000) Vol 4, No 5 (1999) Vol 4, No 5 (1999) Vol 4, No 2&3 (1998) Vol 4, No 2&3 (1998) Vol 4, No 4 (1998) Vol 4, No 4 (1998) Vol 4, No 1 (1997) Vol 3, No 9 (1989) Vol 3, No 8 (1988) Vol 3, No 7 (1987): (Supplement) Vol 3, No 7 (1987) Vol 3, No 6 (1986) Vol 3, No 5 (1986) Vol 3, No 4 (1986) Vol 3, No 3 (1985) Vol 3, No 2 (1985) Vol 3, No 1 (1985) Vol 2, No 9&10 (1984) Vol 2, No 9&10 (1984) Vol 2, No 8 (1984) Vol 2, No 8 (1984): (Supplement) Vol 2, No 7 (1983) Vol 2, No 6 (1981) Vol 2, No 5 (1979) Vol 2, No 5 (1979) Vol 2, No 4 (1979) Vol 2, No 3 (1979) Vol 2, No 2 (1977) Vol 2, No 1 (1977) Vol 1, No 4 (1974) Vol 1, No 3 (1971) Vol 1, No 2 (1968) Vol 1, No 1 (1968) More Issue