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The Ability of ᵝ-Glukan Pleurotus ostreatus in Biosorption of Lead Noverita, Noverita; Widyastuti, Anisa; Sukara, Endang; Ragamustari, Safendrri K.
Al-Kauniyah: Jurnal Biologi Vol. 19 No. 1 (2026): AL-KAUNIYAH JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v19i1.40371

Abstract

The increase in toxic pollutants, such as the heavy metal lead (Pb²⁺), in aquatic environments is caused by anthropogenic activities and natural factors. Lead is difficult to degrade naturally, necessitating bioremediation methods, one of  involves biosorption agents. Macrofungi, such as Pleurotus ostreatus, have complex cell walls capable of absorbing heavy metals through β-glucan. This study evaluates the effectiveness of β-glucan from P. ostreatus in adsorbing lead. The biosorption mechanism is influenced by functional groups such as  hydroxyl (-OH), carboxyl (-COOH), and amine (-NH₂), as well as the coil structure of β-glucan, which affects binding site availability. Results show biosorption efficiency reaches 89–97%, with the highest at 97% at 25.64 mg/L and a contact time of 3 hours. Even after 1 hour, efficiency remains high (96%), indicating rapid and effective adsorption. FTIR analysis reveals changes in functional group structures after lead exposure, confirming the role of active groups in biosorption. Biosorption efficiency is also influenced by metal concentration, biomass amount and surface area, contact time, and biosorbent diffusion. These findings highlight the potential of β-glucan from P. ostreatus as a natural biosorbent for lead remediation in aquatic environments.
Pemanfaatan Maltodextrin Singkong untuk Perekat Ramah Lingkungan dalam Pembuatan Papan Partikel dari Bagas Sorgum (Utilization of Cassava Maltodextrin for Eco-friendly Adhesive in the Manufacturing of Sorghum Bagasse Particleboard) Sutiawan, Jajang; Hermawan, Dede; Kusumah, Sukma Surya; Widyaningrum, Bernadeta Ayu; Sukara, Endang
Jurnal Sylva Lestari Vol. 8 No. 2 (2020): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl28144-154

Abstract

The development of natural adhesives derived from non-fossil resources is very important for the future. This research aimed to develop natural adhesive from maltodextrin and compare it with other natural adhesives such as citric acid and malic acid for particleboard production. The effect of the adhesive raw materials on the physical and mechanical properties of the particleboards was investigated. The sweet sorghum and those natural adhesives were used in the manufacturing of particleboard. The resin content of the natural adhesive was 20 wt% base on air-dried particles. The dimension and density target of the boards were 30 x 30 x 0.9 cm3 and 0.8 g/cm3, respectively. The particleboards were prepared by hot pressing at 200°C for 10 min. The physical and mechanical properties of particleboards were evaluated based on Japanese Industrial Standard for particleboard (JIS A 5908-2003). The results showed that the density, moisture content, modulus of elasticity, and modulus of rupture met the requirements of the JIS A 5908-2003 standard, while the thickness swelling, water absorption, and internal bond did not meet the standard requirements. The results of FTIR analysis indicated the establishment of ester linkages due to the reaction between the natural adhesive and sorghum bagasse that contributed to the excellent physical and mechanical properties of the particleboard. Keywords: cassava, maltodextrin, natural adhesive, particleboard, sweet sorghum
Medium Optimization for Antimicrobial Production By Newly Screened Lactic Acid Bacteria Rohmatussolihat, Rohmatussolihat; Lisdiyanti, Puspita; Yopi, Yopi; Widyastuti, Yantyati; Sukara, Endang
Annales Bogorienses Vol. 22 No. 1 (2018): Annales Bogorienses
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ann.bogor.2018.v22.n1.1-11

Abstract

Lactic acid bacteria (LAB) are important for prevention of spoilage and pathogenic bacterial growth in foods due to their ability to generate antimicrobial substances. The objective of this study was to screen LAB for antimicrobial activity and to optimize culture medium for antimicrobial production using Response Surface Methodology (RSM) with Central Composite Design (CCD). Optimization of antimicrobial production of selected LAB was conducted with different combinations of glucose, NaCl, inoculum, and temperature. Our experimental results showed that from 129 LAB isolates, 55 showed significant inhibition against Bacillus subtilis, Escherichia coli, Micrococcus luteus, Staphylococcus aureus, Aspergillus niger, and Candida albicans. No isolates inhibited the growth of Aspergillus flavus. Lactobacillus plantarum LIPI13-2-LAB011 was selected for further study on culture medium optimization to inhibit the growth of C. albicans. From statistical analysis, the production of antimicrobial substances was significantly influenced by temperature, NaCl, and concentration of glucose. Furthermore, the optimum concentrations of glucose, concentration of inoculum, temperature, and NaCl were 1.63 %, 3.03%, 33.74°C, and 3.4%, respectively, with a maximum predicted inhibition index of 1.916, which increased 3.56-fold compared to that obtained in medium before optimization processes. The result was confirmed as when the optimum concentration of nutritions used, the inhibition index increased 3.12-fold.
Present Status and Challenges on Agricultural Microbe Bio-Prospecting in Indonesia Sukara, Endang
Annales Bogorienses Vol. 11 No. 1 (2007): Annales Bogorienses
Publisher : BRIN

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Abstract

Food security is one of the essential needs which can never be ignored by any society, including in particular Indonesia, as the world population is expected to rise to around 10 billion marked by 2025. The problem is that the agriculture in developed and developing countries that follow the path of developed countries experiences create a range of serious environmental degradation. An intensive agricultural production through the use of pesticide and herbicides, forest clearing and continued use of land resources for the agricultural purposes are not sustainable practices. In consequences, degradation of ecosystem, oil erosion, and low productivity of land, poor water quality and lost of biological diversity (including microbial and genetic resources) occurred at alarming state. Meanwhile, the efforts in addressing the above situation is traditionally focused on plant phen types (breeding. plant genetic engineering, etc.) but the important role of microbial communities that interact with plants to influence plant health and productivity has been largely ignored. The interaction of microbes with plants and its relevant to soil fertility and productivity, the biocontrol properties of microbes and challenges toward sustainable agriculture is highlighted.
Rapid Assessment of Diverse Trichodermal Isolates of Indonesian Origin for Cellulase Production Fahrurrozi, Fahrurrozi; Ratnakomala, Shanti; Lisdiyanti, Puspita; Anindyawati, Trisanti; Sukara, Endang
Annales Bogorienses Vol. 14 No. 1 (2010): Annales Bogorienses
Publisher : BRIN

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Abstract

Trichoderma is a well-known candidate to be promoted as cellulase producer for the hidrolysis of lignocellulose that contain in woody biomass. The number of trichodermal isolates in our laboratory collected from diverse ecosystem types in Indonesia increases significantly during the last 5 years. It is our aim to assess the cultures for its ability in producing cellulase. Sixty-six trichodermal isolates used in this experiment are obtained from Biotechnology Culture Collection (BTCC), Research Center for Biotechnology, Indonesian Institute of Sciences (LIPI). The 31 isolates were isolated from District of Liwa (South Sumatra, Indonesia) and the 35 isolates from District of Maros (South Sulawesi, Indonesia). The isolates were screened qualitatively, 7 isolates from Liwa and 12 isolates from Maros showed cellulolytic activity. From the results of quantitative test, two strains (ID08-T004 and ID08-T63) showed the higher cellulolytic activity among the selected strains, 133.5 and 133.5 U/ml, respectively. These extracellular enzymes were characterized their temperature and pH optimum. The temperature optimum for both enzymes was the same, 50C, with activity 213.6 U/ml for enzyme extracted from ID08-T004 and 197.3 U/ml for enzyme from ID08-T0063. The pH optimum was pH 5 of ID08-T004 with activity 137.7 U/ml and pH 6 for ID08-T063 with activity 75.0 U/ml. The enzymes from ID08-T004 and ID08-T063 were stable in their temperature and pH optimal condition even after 90 minutes incubation with activity 179.0 U/ml and 86.7 U/ml, respectively. The enzyme stability was approximately 150 minutes for both enzymes in the temperature and pH optimum.
Cellulolytic Yeast Isolated From Raja Ampat Indonesia Kanti, Atit; Sukarno, Nampiah; Sukara, Endang; Darusman, Latifah K.
Annales Bogorienses Vol. 16 No. 1 (2012): Annales Bogorienses
Publisher : BRIN

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Abstract

The objective of this study was to select and characterize three yeast isolates originating from soil of Raja Ampat region of Papua, Indonesia for its potential to produce cellulase . Selection and characterization of cellulolytic yeast was carried out by measuring cellulolytic Index (IS)with congo red method and measurement of Carboxy Methyl Cellulase (CMC-ase) activity through determination of reducing sugar with dinitrosalycilic methods. Cellulolytic Index (IS) of the isolates Sporobolomyces poonsookiae Y08RA07, Rhodosporidium paludigenum Y08RA29, and Cryptococcus flavescens Y08RA33 were 1.40, 2.60 and 1.66, respectively. CMC-ase produced optimum at pH 8 at 37ºC by isolate Y08RA07; whereas for Y08RA29 and Y08RA33 were at pH 6, at 28ºC. Paper waste was good substrate for cellulase enzyme production by isolate Y08RA07, while for two other isolates the best substrate was CMC. Isolate Y08RA29 having highest cellulase activities when grown in CMC, while isolates Y08RA07 and Y08RA33 achieved highest enzyme activity when grown in bamboo leaf. 
Isolation of Endophytic Microbes from Gunung Halimun National Park, West Java, Indonesia and Bioassay Their Potency for Eradicating Microbial Crops Pathogen Sukara, Endang; Melliawati, Ruth
Annales Bogorienses Vol. 17 No. 1 (2013): Annales Bogorienses
Publisher : BRIN

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Abstract

Gunung Halimun National Park
Co-Authors Abd. Rasyid Syamsuri Abinawanto Achmad Dinoto Achmad Dinoto Andi Hartono Andi Salamah Atit Kanti Atit Kanti Bernadeta Ayu Widyaningrum Dede Hermawan Dolly Priatna Fahrurrozi Fahrurrozi Febia Rini Hanies Ambarsari Herman Suparman Simanjuntak Jajang Sutiawan Kusumah, Sukma Surya latifah K Darusman Latifah K Darusman Latifah K. Darusman Lisdayanti, Puspita Lukman Hakim Miranti Nurindah Sari Nampiah Sukarno Noverita Nuniek Ina Ratnaningtyas Nuraeni Ekowati Purity Sabila Ajiningrum Puspita Lisdayanti Puspita Lisdiyanti PUSPITA LISDIYANTI Puspita Lisdiyanti Ragamustari, Safendrri K. Rohmatussolihat - ROHMATUSSOLIHAT ROHMATUSSOLIHAT Rohmatussolihat Rohmatussolihat Ruth Meliawati Ruth Melliawati Ruth Melliawati SHANTI RATNAKOMALA Shanti Ratnakomala Sri Lestari Sukma Surya Kusumah Sulistiani ., Sulistiani Sulistiani Sulistiani Sulistiani Sulistiani, Sulistiani Sutiawan, Jajang Trisanti Anindyawati Trisanti Anindyawati, Trisanti Wibowo Mangunwardoyo WIBOWO MANGUNWARDOYO Widyaningrum, Bernadeta Ayu Widyastuti, Anisa Y. Purwanto Yantyati Widyastuti Yantyati Widyastuti Yantyati Widyastuti YOPI YOPI Yopi Yopi Yulneriwarni Yulneriwarni