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BERITA BIOLOGI

berita_biologi
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Published by Lembaga Ilmu Pengetahuan Indonesia

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Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Articles 2,125 Documents

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OPTIMASI PRODUKSI SERTA ANALISIS AKTIVITAS ANTIOKSIDAN DAN ANTIMIKROBA SENYAWA EKSOPOLISAKARIDA DARI JAMUR TIRAM PUTIH (Pleurotus ostreatus) PADA MEDIA CAIR [Optimization of Exopolysaccharide Production from Pleurotus ostreatus Growth on Liquid Medium and Analysis of Its Antioxidant and Antimicrobial Activity ] Saskiawan, Iwan; Munir, Misbahul; Achmadi, Suminar S
BERITA BIOLOGI Vol 15, No 2 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Pleurotus ostreatus is well known as an oyster mushroom that is very popular because of its high nutritional value and pharmaceutical component. The aim of this research was to study the antioxidant and antibacterial activity of exopolysaccharides from P. ostreatus grown on liquid medium.The P. ostreatus was grown on Mushroom Complete Medium (MCM) containing various types of Carbon (C) and Nitrogen (N) sources, i.e glucose, lactose, amylose and sucrose as a Carbon sources and yeast extract, polypeptone, NH4Cl, and NH4NO3 as a Nitrogen sources. The results showed that sucrose and yeast extract were the best source of Carbon and Nitrogen that produced 208 and 100 mg/L of exopolysaccharides. Â The exopolysaccharide exhibited antimicrobial activity against Bacillus subtilis and Escherichiacoli. However, it did not have antimicrobial activity against Saccharomyces cerevisiae. Â In addition, the exopolysaccharide indicated to have an antioxidant activity.

KEANEKARAGAMAN SUKU LEJEUNEACEAE (HEPATICAE, LUMUT HATI) DI D AERAH SEKITAR PPKAB (PUSAT PENDIDIKAN DAN KONSERVASI ALAM BODOGOL) TAMAN NASIONAL GUNUNG GEDE-PANGRANGO, JAWA BARAT Haerida, Ida
BERITA BIOLOGI Vol 9, No 6 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

As many as thirteen species of Lejeuneaceae occurs in Bodogol, Gunung Gede-Pangrango National Park, West Java. Those species are Archilejeunea planiuscula (Mitt.) Steph., Cheilolejeunea ceylanica (Gootsche) R.M. Schust & Kachnoo, Cheilolejeunea trapezia (Nees) Kachroo & R.M. Schust., Cololejeunea denticulata (Horik.) Hatt., Cololejeunea goebeli (Gott. ex Schiffn.) Schiffh., Cololejeunea spinosa (Horik.) Hatt., Drepanolejeunea tkwaitesiana (Mitt.) Steph., Lejeunea discreta Lindenb., Lejeunea rotundistipula (Steph.) Hatt., Lejeunea sordida (Nees) Nees, Leptolejeunea maculata (Mitt.) Schiffn., Lopholejeunea subfusca (Nees) Schiffn., and Thysananthus retusus (Reinwardt, Blume & Nees) B. Thiers & Gradstein. Four species of these have not been reported previously from the island. Those are Cololejeunea denticulata, Drepanolejeunea thwaitesiana, Lejeunea rotundistipula and Cololejeunea spinosa.Keys, descriptions and figures are given for all species.

SELEKSIBIAK Aspergillus spp. PENGHASIL AMILASE UNTUK PEMBUATAN PROTEIN SEL TUNGGAL DARITEPUNG GANYONG (Canna edulis Kerr.)Screening of Aspergillus spp. Strains Producing Amylases To Be Used As Inoculant In Single Cell Protein Production From Ganyong (Canna edulis Kerr.) Starch Naiola, Elidar
BERITA BIOLOGI Vol 4, No 4 (1998)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Two strains of fungi were used as innculant to produce Single Cell Protein (SCP) using the ganyong (Canna edulis Kerr.)starch as carbohydrate sources. Those two strains were Aspereillus nieer and A.clavatus identified as amylolytic fungi wich produce hight clear zone to colony diameter ratio in medium containing soluble starch with Iodium test.At the suitable interval time (0, 24, 48, 72 and 96 hours) the dry cell weight or biomass, pH and reducing sugar concentration in the medium containing ganyong starch was determined.It was found that maximum amount of reducing sugar concentration was hisher in A. clavatus (8.5 e/l) compared to A. nieer (4,5 g/l), were produced after 24 hours.The maximum amount of biomass produced by A. nieer was 8,5 g/l after 48 hr, while by A clavatus was 7,25g/l after 96 hr.

AKUMULASISOLUT DAN REGULASIOSMOTIK DALAM SEL TUMBUHAN PADA KONDISISTRES AIR Naiola, B Paul
BERITA BIOLOGI Vol 7, No 6 (2005)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v7i6.872

One of the interesting topic in Plant-Water Relations is the synthesis and accumulation of solutes by plant cells and within thosecells. This paper is to make a short review upon this topic. It shows the relationship of water potential components of plant cells (a - total water potential, 0n - osmotic potential and 0p-turgor pressure), in accordance with environmental fluctuations (especially water stress), osmotic regulation (osmotic adjustment) and the role of solute synthesis and accumulation in plant cells when drought develop. Proline (among sugars and organic acids), dominates most of the available reports as both an osmotic constituent/ osmotic agent and a compatible solute. Such a reviewed topic that still less available in Indonesian.

ANALISA KANDUNGAN LOVASTATIN, PIGMEN DAN CITRININ PADA FERMENTASI BERAS IR-42 DENGAN MUTAN Monascus purpureus [Analysis of Lovastatin, Pigments and citrinin in Rice which fermented by Monascus purpureus mutant] Nurhidayat, N
BERITA BIOLOGI Vol 11, No 1 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

The need of medicine product are increasing now.The fermentation of rice by using Monascus purpureus produce lovastatin, pigments and citrinin as secondary metabolites. The aim of this study was to know the concentration of lovastatin, red and yellow pigments and citrinin in rice which fermented by Monascus purpureus that had been mutated by using ultraviolet irradiation.Three strains were used in this research, such as AsK, yellow Jmba and red Jmba.The result were analyzed by using HPLC and Spectrofotometer.The result showed that the yellow Jmba strain which treated by UV mutagenesis for 3 minutes contain higher lovastatin (1.798%) and pigment and lower citrinin (0.019%) compare to without mutagenesis.On the other hand ASK strain produced higher lovastatin (1.903%) but higher citrinin (1.270%).This research is expected to provide scientific information to the public.That M. purpureus contained lovastatin that is beneficial,red and yellow pigments for natural food colorant.

UPAYA MEMPEROLEH BIBIT SUWEG {Amorphophallus paeoniifolius (Dennst.) Nicolson} MELALUI STEK UMBI DAN STEK RACHIS YANG DIMANIPULASI DENGAN ZAT PENGATUR TUMBUH [Propagation of Suweg {Amorphophallus paeoniifolius (Dennst.) Nicolson} Using Tuber and Rachis C Cahyaningsih, Ria; M Siregar, Hartutiningsih
BERITA BIOLOGI Vol 12, No 1 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Elephant yam {Amorphophallus paeoniifolius (Dennst.) Nicolson} can be developed as food for diversification in Indonesia. The main obstacle is in propagation, due to long period dormancy of tuber and slow life cycle. Study on propagation of elephant yam was conducted in of Bogor Botanical Garden nursery. The aims of this study are to propagate elephant yam using tuber and rachis cutting manipulated with Plant Growth Regulators (PGR) respectively to break dormancy and to obtain an effective and efficient propagation method. PGR used in tuber cutting (small adjacent tuber and sliced-bulb) is GA3 10 ppm, GA3 20 ppm, IBA 10 ppm, IBA 20 ppm, BAP 10 ppm, BAP 20 ppm and control with or without burned husk, meanwhile PGR used in rachis cutting (R1, R2 and R3) is BAP 1 ppm, NAA 1ppm, and Rootone-F 1600 ppm. Propagation with tuber showed that IBA, GA3, control, and BAP gave similar result in developing bud numbers. Propagation with small adjacent tuber gave better result in sprouting number. Propagation with small adjacent tuber and manipulated with GA3 resulted highest sprouting number. Rootone-F 1600 ppm caused death, meanwhile BAP, NAA, and their combination (BAP-NAA) had no influence on rachis cutting growth. Lower doses Rootone-F, BAP, NAA, and BAP-NAA higher doses, rachis cuttings from juveniles are recommended.

STRUKTUR BIBIR Osteochilus partilineatus KOTTELAT DAN PERBANDINGANNYA DENGAN 7 JENIS Osteochilus LAINNYA Hadiaty, Renny Kurnia
BERITA BIOLOGI Vol 6, No 4 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Osteochilus is a genus of fish with large lips,everted, sucker-like, covered with more or less folds of plicae bearing numberous unicellulair keratinous projections or uncuil. The structure of thr lipsÂ Osteochilus is divided into three from i.e. ectomorph, mesomorph and endomorph, based on the length and shape of plicae on the lateral portion of the upper lip, the distribution of uncuil and taste buds on the plicae , also from the size and shape of uncuil.Â Osteochilus partlilineatus is a small fish which has a nice colour patteern, so it is potential as an ornamental fish. it has an ectomorph lips, which the structure of plicae,uncuil and taste buds. The from of the taste buds redemble the rose flower which are very different with the structures of that 7 otherÂ Osteochilus that were examined by Roberts using scaning Electro Microscope (SEM).

EFEKTIVITAS INOKULAN BRADYRHIZOBIUM DAN GALUR MUTAN KEDELAI TERHADAP KANDUNGAN N DAN HASIL DI LAHAN MASAM Gandanegara, S; Wemay, J; Idawati, Idawati; Ardjasa, Wayan Sabe
BERITA BIOLOGI Vol 5, No 1 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

One field experiment had been conducted at Institute for Research and Agricultural Technology Evaluation at Taman Bogo FieldSta,to screen some Bradyhyzobium inoculants on soybean mutant lines developed for acid soil.Inoculants evaluated were single strain B-22,and its mixed inoculants (B-22+B37), (B-22 + G49), and (B-22+TAL 102) on two soybean mutant lines No.07 and 58,and cv.Wilis as check variety. Plant growth and N yield were determined at pod development (R4) and grain maturity (R8) stages.The effect of inoculation significantly influenced nodul-ation and N yield and tended to increase plant dry weight 25%.Mixed inoculant (B-22+B-37) showed good symbiotic compatibility with the three soybean genotypes tested,whereas inoculant(B- 22+G49) only showed good compatibility with mutant line No.58.Cultivar Wilis had broader symbiotic spectrum as compared to mutant line No. 07 and 58.The effect of plant genotypes,and its interaction with inoculants were significant on grain and N yield.It was observed that at pod development stage,the plant growth of mutant line No. 07 were slower than the other genotypes but it had better nutrient translocation rate to grain which resulted grain yield of cv. Wilis. The results showed that this mutant line could be developed for this area.

EVALUASI KARAKTER PEKA PANJANG HARI (PHOTOPERIOD) PADA TIGA GOLONGAN (Subspecies) PADI (Oryza sativa) SERTA PENGARUHNYA TERHADAP KARAKTER AGRONOMIS Suhartini, Tintin
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

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 randomized block design with 4 replications. The result showed the local varieties were sensitive and javanica were medium, while improved varieties and japonica type were insensitive to photoperiod. The effect of seasons were significantly different to flowering days of local and javanica types, significantly and not significantly different to japonica, while not significantly different to improved varieties. The season has not significant effect to panicle length and unfilled grain per panicle characters for all cultivars type. Plant heigth and dry straw per hill were higher in rainy season, while fill grain per panicle, total grain per panicle and 1000 grain weight were higher in dry season. The results showed there have correlation between flowering days to all characters were observed, except number of tiller in rainy season was not correlated.

KERAGAMAN GENETIK Tacca leontopetaloides (L.) Kuntze (Taccaceae) DARI BEBERAPA PROVENANSI DI INDONESIA BERDASARKAN MARKA INTER SIMPLE SEQUENCE REPEATS (ISSR) [The Genetic Diversity of Tacca leontopetaloides (L.) Kuntze (Taccaceae) from Various Provenance Ardiyani, Marlina; Sulistyaningsih, Lulut Dwi; Esthi, Yunita Nur
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Kecondang or Taka (Tacca leontopetaloides), a member of Taccaceae, is one the carbohydrate alternatives to rice which can be developed in coastal area. With the global warming, the sea level has increased and small islands are more isolated. The people who lives in these islands should depend on their bioresources.As Taka inhabits coastal area, the development of this plant becomes critical.A total of 65 accessions of Taka from 9 provenances in Indonesia (Sukabumi, Madura, Kp.Siung (Yogyakarta), Gn. Kidung (Yogyakarta), and the small islands in Karimun Jawa namely Nyamuk, Katang, Cendekia, Kumbang, Seruni islands) were characterized using six ISSR markers [GSGG (TG5)T; CCAG(TGG)3TG; GGAG(TGG)3TG; BDBT(TCC4); (AC)8C; (AG)8G]. The scoring of the fragments resulted in 55 (69.6%) polymorphic bands. The size of the bands varied from 150bp to 1,6kb. The 65 accessions of Taka made several clusters according to their provenances. The range of individual genetic dissimilarity was from 0.012 to 0.186. The results showed that amongst nine population studied, Gn. Kidul, Yogyakarta population has the highest level of genetic variation with mean values of Na = 1.3544Â±0.4814, Ne =1.1784Â±0.3025, PLP = 35.44% and He = 0.1094Â±0.1681. Whereas, P. Nyamuk, Kep. Karimun Jawa population has the lowest level of genetic variation with mean values of Na = 1.0759Â±0.2666, Ne = 1.0523Â±0.2163, PLP = 7.59% and He = 0.0275Â±0.1097.

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