Khaswar Syamsu

Khaswar Syamsu
Bogor Agricultural University | IPB · Department of Agroindustrial Technology

Prof. PhD

About

126
Publications
143,810
Reads
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540
Citations
Additional affiliations
July 2009 - present
Bogor Agricultural University
Position
  • Professor (Full)
Description
  • Mostly research on finding new environmentally friendly process/products, such as new biomaterials, biofuel/bioenergy, biopesticides, biofertilizers, etc.
April 1994 - present
Bogor Agricultural University
Position
  • Lecturer
Description
  • * Basic Calculation in Process Engineering * Unit Operations * Bioprocess Engineering Fundamentals * Bioindustrial Technology * Down Stream Processing
March 1992 - March 1994
The University of Queensland
Position
  • Researcher
Description
  • I was working in Prof. Paul F. Greenfield's laboratory on the topic of "Stability of a Chimeric Plasmid in Saccharomyces cerevisiae".
Education
April 1990 - April 1994
The University of Queensland
Field of study
  • Chemical Engineering (Biochemical Engineering)
March 1988 - March 1990
The University of Queensland
Field of study
  • Biotechnology
July 1982 - March 1987
Bogor Agricultural University
Field of study
  • Agricultural Technology (Agro-industrial Technology)

Publications

Publications (126)
Article
Full-text available
Sweet sorghum (Sorghum bicolor L. Moench) bagasse is a by-product of sugar industry from sweet sorghum juice which can be used as raw material for bioethanol production. The aim of this research is to produce bioethanol from sweet sorghum bagasse using Trichoderma reesei and Saccharomyces cerevisiae. The Conventional Simultaneous Saccharification a...
Article
Full-text available
Tofu waste is a potential raw material for producing bioethanol since it has 52,82 % carbohydrate content, among which 35,12 % is starch. Indonesia has approximately 315 tofu business units that produce 2,6 million tons of tofu per year, so the availability of tofu waste is abundant, and its current use is only for feed. The use of starch as the ra...
Article
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Sweet sorghum bagasse (SSB) is the dregs of the sweet sorghum plant. SSB is potential lignocellulosic biomass for bioethanol production. SSB cellulose, hemicellulose, and lignin content is 30-40%, 20-30%, and 25-30%, respectively. Previously SSB has been used as animal feed and has not been utilized optimally. Sweet sorghum bagasse has a high conte...
Article
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The flavor precursors reached an optimal balance at short fermentation (3-4 days) when compared to the traditional fermentation period (6 days) and have the potential to develop well quality flavors. The study purpose was to determine consumer preferences and sensory attributes of chocolate candy using shorter fermentation (4 days) as raw material....
Article
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Mills produce Crude Palm Oil (CPO) from procurement channels of their plantation, plasma farm, and independent smallholders’ farm. The mill manufactures Fruit Fresh Bunch FFB from all channels and sells CPO with low Free Fatty Acid (FFA) CPO for foods and CPO for industrial. CPO with low FFA for export consists of premium-grade CPO with FFA level <...
Article
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The ability of activated carbon as an adsorber is depended on activating agent used for the activation process. An industrial application of the ethylene adsorption process as well as the design of the necessary equipment requires an accurate model to determine the effect of various factors on the efficiency of the process. The model is needed to p...
Article
Full-text available
Cephalosporin C acylase (CCA) is an essential enzyme for the one-step conversion of cephalosporin C into 7-aminocephalosporanic acid (7-ACA), an intermediate compound used to synthesize various semi-synthetic cephalosporin antibiotics. The industrial process prefers to use enzymes in immobilized form rather than soluble. A crosslinked enzyme aggreg...
Article
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The study of controlled methods of cocoa fermentation on a small scale is important to assess the maintenance of heat generated in the last days of fermentation. The research aimed to study the impact of spontaneous fermentation in controlled fermentation systems on the quality and acceptability of fermented cocoa beans. A 2×3 complete factorial de...
Article
As a natural material that is abundant, versatile, and sustainable, cellulose is an alternative that is expected to substitute non-renewable polymers. The physicochemical characteristics of natural cellulose are related to its isolation process that results in cellulose having a particular chain length, crystallinity, and number of inter and intram...
Article
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Indonesia’s cocoa processing industry has a high demand for fermented cocoa but only about 49% of the fermented cocoa is available. Fermentation is critical because it kills the cotyledons and generates aroma precursors. Indonesian farmers, on the other hand, are hesitant to ferment due to the lengthy fermentation process (6-7 days). The purpose of...
Article
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This study aims to provide an approach for increasing the hydrophobicity of nanofibrillated cellulose in oil palm empty fruit bunches (NFC-OPEFBs) through surface modification using a sustainable cationic surfactant, i.e., cetyltrimethylammonium chloride derived from palmityl alcohol (CTAC-PA). The NFC-OPEFB was prepared by sulfuric acid treatment....
Article
Full-text available
Fish anesthetics have been a long time applied for handling and transporting fish. Eucheuma cottonii has been well known as antibacterial, antioxidant, and anti-cancer, and it is possible to be used as fish anesthetics due to the content of flavonoids and saponins. The pharmacologic properties of E. cottonii are very well documented. This study aim...
Article
Red seaweed species Eucheuma cottonii was thought to have potential as an anesthetic agent because it is shown to contain compounds with bioactivity as antimicrobial, antifungal, and also anticancer. There have been no studies regarding the active ingredients of anesthetized. The objective of the study was to examine the potential of E. cottonii...
Preprint
Full-text available
An increased population has an impact on rising fuel needs. Fuel has relied on nonrenewable sources in the last few decades and therefore, alternative renewable materials are needed to be developed. Bioethanol is one of the bioenergy sources that can replace gasoline. Bioethanol generates very low emission and uses renewable sources. The developmen...
Article
Kapok fiber (Ceiba pentandra) is a potential source of cellulose, but it's utilization is still minimal. This study aimed to isolate nanocrystalline cellulose (NCC) from kapok fibers using acid hydrolysis at various times and characterize its properties as reinforcement on alginate-nanocrystalline cellulose (Alg-NCC) hydrogel beads. NCCs were chara...
Article
Full-text available
An increased population has an impact on rising fuel needs. Fuel has relied on non�renewable sources in the last few decades and therefore, alternative renewable materials are needed to be developed. Bioethanol is one of the bioenergy sources that can replace gasoline. Bioethanol generates very low emission and uses renewable sources. The developme...
Article
Full-text available
Miniplants established by the independent smallholder’s secondary cooperative is one of the efforts to get rid from monopsony market and mill. By the existence of miniplants, Fresh Fruit Bunch (FFB) sales channel will not only end at mill, but also at the miniplant in spite of in limited capacity. Each channel of FFB sales should be supported by th...
Article
Full-text available
Hydrogen gas is generated by the fossil fuel refinery process, fixation of sunlight, wind turbine, and water electrolysis. Hydrogen gas is promising energy due to its high energy content and clean combustion. It is also able to be produced by fermentation series, using waste as a substrate. Vinasse is a waste of ethanol distillation from fermented...
Article
Full-text available
The application of catechin is limited due to low stability, however nanoencapsulation technology can improve catechin stability. This study aimed to determine the effect of the types and concentrations surfactants in the catechin encapsulation process on β-CD. Concentrations of surfactants used were Poloxamer 188 (NKP, 0.5%-1.5%), Tween 80 (NKT, 2...
Article
Full-text available
The potential use of sago pith waste to produce activated carbon were studied. This study examined the effect of KOH or KMnO4 as activating agent on producing ball milled sago pith waste-based activated carbon. Activation was done using KOH or KMnO 4 at 2.5% and 5% concentration, heated in a reactor to reach 800°C for 1 hour, and then continue stea...
Article
Full-text available
Bioactive compounds in Eucheuma cottonii include phenols or polyphenols with antioxidant, antibacterial, and antiviral properties. Seaweed quality, including phenolic content, is highly determined by several factors, including the growth location, cultivation technique, and harvest age. This study aimed to determine the effect of harvest age and so...
Article
Full-text available
Bamboo-based activated carbon was made using the activating agents KOH and KMnO4 at high temperature. This study examined the ability of unmilled and ball-milled bamboo activated using KOH or KMnO4 to fulfil the activated carbon standard parameters. Chemical activation was done using KOH and KMnO4 at 2.5% and 5% concentration, heated at 800 °C, and...
Article
Full-text available
Kapok (Ceiba pentandra) is one of natural fibrous sources whose potency as source of microfiber cellulose (MFC). Microfiber cellulose of kapok was isolated by chemical hydrothermal treatment and characterized by several analysis such as chemical composition analysis, scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR)...
Article
Full-text available
Pandanus amaryllifolius or pandan is widely used as a source of natural seasoning such as food coloring and flavoring. The objective of this research is to study maltodextrin concentration’s effect on physical and chemical properties of pandan preparations, to substitute the use of synthetic coloring and flavoring in its application to pandan cake....
Article
Full-text available
This study was performed on sweet sorghum bagasse as a medium for bio-ethanol production. The aim of this study is to design a method to produce bio-ethanol by Simultaneous Saccharification and Fermentation (SSF) technology using Trichoderma reesei and Saccharomyces cerevisiae at a higher yield. Pre-treatment stage was conducted by using sodium hyd...
Article
The aim of this research was to find out the effect of substrate concentrations (COD) of vinasse and the length of fermentation time to bio-hydrogen gas production using agent fermentation of photosynthetic bacteria, Rhodobium marinum. The production of bio-hydrogen was examined by varying COD of vinasse (10,000; 20,000; 30,000; 40,000; 50,000 mg C...
Article
Full-text available
Kapok is a source of natural fiber in addition to cotton, which availability is abundant and contain high cellulose but not been utilized optimally. This study aimed to determine the optimal conditions of sulfuric acid concentration and hydrolysis time in the production process of nanocrystalline cellulose (NCC) from kapok fiber. The research was c...
Article
Full-text available
Zeolite is aluminosilicate containing pores and cavities that are usually used as absorbent materials. Nano zeolite - molybdate was used as a ripeness indicator of avocado. The ripeness indicator was made by dissolving molybdate in hydrogen peroxide (H2O2) and mixed with nano zeolite. This study was aimed to determine the colour change of indicator...
Article
The potential use of sago pith waste, bamboo, and water hyacinth based on the characteristics of raw materials to make liner paper were studied. The analysis conducted covered the analysis of physical characteristics, chemical components, morphology (SEM), functional groups (FTIR), and crystallinity (XRD). The pulp from the three kinds of fiber was...
Article
Full-text available
Oil Palm Empty Fruit Bunches (OPEFB) and mesocarp can mainly be used as a raw material for nanocrystalline cellulose (NCC), which was previously converted into α-cellulose. Although this biomass is abundant, it needs to be observed that which part of the OPEFB and mesocarp are more suitable to be used as a raw material for NCC in terms of the chara...
Article
Full-text available
This study aims to prepare nanocelluloses from chemically purified celluloses of oil palm empty fruit bunch (CPC-OPEFB) by using acid hydrolysis. The nanocelluloses from CPC-OPEFB was prepared with sulfuric acid treatment at the concentration of 67 wt% and temperature of 40 ± 1°C, for 10, 20, 30, and 40 min. As a comparison, nanocelluloses from com...
Article
Full-text available
Biodegradation of the bioplastic composite based on cellulose from oil palm empty fruit bunches was investigated in this study. Microbes consortium from landfill soil collected from top soil were used as the inoculums for the biodegradation process. Biodegradation test of the bioplastic from oil palm empty fruit bunch samples compared with oxodegra...
Article
Full-text available
An increased awareness of food safety and quality has led to an increased demand for live edible fish. This product requires effective and efficient handling technology and transport to ensure a low mortality rate, but live fish transport has not yet met this criteria. Anesthetized fish can be transported in larger quantities without being stressed...
Article
Full-text available
Biodegradation of the bioplastic composite based on cellulose from oil palm empty fruit bunches was investigated in this study. Microbes consortium from landfill soil collected from top soil were used as the inoculums for the biodegradation process. Biodegradation test of the bioplastic from oil palm empty fruit bunch samples compared with oxodegra...
Article
Full-text available
Gambir is one of the most economically important natural products of Indonesia. Indonesia accounts for 80% of the global exports of this product. The product contains catechin, a phenolic compound of the flavonoid group, which has demonstrated bioactivity against horticulture-destroying fungi. However, its bioactivity in controlling wood-decaying f...
Article
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p>Kualitas biji kakao fermentasi rendah karena kualitas starter mikroba untuk fermentasi biji kakao rendah. Seleksi starter mikroba diperlukan untuk mendapatkan starter yang unggul. Ada dua jenis starter, yaitu starter cair dan starter kering. Starter cair banyak digunakan untuk fermentasi biji kakao. Starter yang diuji adalah starter cair, yaitu s...
Article
Full-text available
The objective of this study was to investigate the technique to produce bioethanol by co-culture of Trichoderma reesei and Saccharomyces cerevisiae on sweet sorghum bagasse which has higher yield and productivity of bioethanol. Sweet sorghum bagasse contains 48.65±0.02% cellulose. Cultivation of Trichoderma reseei on sweet sorghum bagasse produced...
Article
Full-text available
Cheese generally has limitations to be consumed by people with milk protein allergies and vegetarian. Besides the price is relatively expensive, the fat content of cheese is also high. Proteins in soybean may be an alternative to protein of milk in cheese making because it has a protein content of which is not much different as well as a low fat co...
Article
Full-text available
THE EFFECT OF PRETREATMENT OF MICROWAVE HEATING ON EFFICIENCY OF HYDROLYSIS TIME AND α-CELLULOSIC CHARACTERISTICS OF PALM OIL WASTE BIOMASS. This research is underlied by the needs of various industries for alpha cellulose, especially for the needs of raw material for cellulose nanocristalline, from fiber derived from the most potential waste bioma...
Article
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This study investigated biodegradation of the bioplastic composite based on oil palm cellulose in plantation soil as natural inoculum. The biodegradation rate was evaluated as carbon dioxide released during the biodegradation test. Biodegradation test of the bioplastic compared with starch-based bioplastic and conventional plastic samples were cond...
Article
Full-text available
Cheese generally has limitations to be consumed by people with milk protein allergies and vegetarian. Besides the price is relatively expensive, the fat content of cheese is also high. Proteins in soybean may be an alternative to protein of milk in cheese making because it has a protein content of which is not much different as well as a low fat co...
Article
Full-text available
Phellinus lamaoensis (Murr.) Hein is fungal pathogen that can cause brown root rot disease in cocoa, tea, rubber, and coffee plants. Endophytic fungi, Penicillium lagena, isolated from bandotan (Ageratum conyzoides Linn.), medicinal plant, is able to inhibit the growth of pathogenic, P. lamaoensis. The effect of carbon source, nitrogen source, and...
Article
Full-text available
Sweet sorghum bagasse (SSB) obtained after juice extraction is a potential feedstock for fermentable sugars production that can be further fermented to different kinds of products, such as ethanol or lactic acid. The proper particle size resulted from phsyical pretreatment and different pretreatment processes including water, alkali, hydrothermal,...
Article
Full-text available
Tofu waste can be used as a raw material for bioethanol production due to its high carbohydrate content in the form of starch. A microbial consortium, consisting of Aspergillus niger and Saccharomyces cerevisiae. The study’s first objective wasto capture the amount of sugar produced from starch hydrolysis using single cultures of Aspergillus niger....
Article
Full-text available
Objectives: This research is aimed to examine the effect of sandfish powder on the spermatozoa quality and genital weights of male mice. Methods/Analysis: In this study, laboratory experimental method was applied. Male mice were treated by giving sandfish powder in three dosage rates of its steroid content (10, 30, and 50μg of steroid/100g body wei...
Article
Full-text available
Uncaria gambir Roxb. is an industrial crop commodity that has a high economic value and good prospect for farmers and exporter. Gambier of traditional processed products (raw gambier) generally have various catechin content, so it is required further handling to increase the purity of catechins from raw gambier. The research was aimed to get a proc...
Article
Full-text available
Cephalosporin is a β-lactam antibiotic produced by Acremonium chrysogenum using submerged fermentation. Carbon and nitrogen are the most influential medium ingredients for cephalosporin formation. The purpose of this study was to obtain the best composition of media for cephalosporin C production. Response surface methodology was used for productio...
Article
Full-text available
Cephalosporin is a β-lactam antibiotic produced by Acremonium chrysogenum using submerged fermentation. Carbon and nitrogen are the most influential medium ingredients for cephalosporin formation. The purpose of this study was to obtain the best composition of media for cephalosporin C production. Response surface methodology was used for productio...
Article
Full-text available
Biodiesel has gained a significant amount of attention over the past decade as an environmentally friendly fuel. However, the biodiesel production process generates glycerol-containing waste streams which have become a disposal issue for biodiesel plants and generated an abundant of crude glycerol, a low-value byproduct of biodiesel manufacturing....
Article
Full-text available
Empty fruit bunch is available abundantly in Indonesia as side product of CPO production. EFB production in Indonesia reached 28.65 million tons in 2015. EFB consist of 36.67% cellulose, 13.50% hemicellulose and 31.16% lignin. By calculation, potential cellulose from EFB is 11.50 million tons. Cellulose could be utilized as source for bioplastic pr...
Article
Full-text available
Cephalosporins is a β-lactam antibiotic that has effectiveness against Gram-positive and negative bacteria. This antibiotic is produced by Acremonium chrysogenum. Optimum cultivation medium can increase the production of cephalosporins. The most influential cultivation medium composition is an inducer that increases production of cephalosporin from...
Article
Full-text available
The aim of this study was to assess the tolerance of two genetically modified Saccharomyces cerevisiae, Pro1(I150T) and Mpr1(K63R) in hyperosmotic stress and to measure the kinetic parameters of them in the production of bioethanol in high sugar concentration media. The results show that all genetically modified yeast could grow in media up to 70%...
Article
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The aim of this study was to assess the tolerance of two modified commercial Saccharomyces cerevisiae Ethanol Red, Pro1(I150T)/Mpr1(K63R) and MSN2-OP in hyperosmotic stress and to measure the kinetic parameters of the best yeast from both of them in the production of bioethanol in very high gravity ethanol fermentation. The results show that Pro1(I...
Article
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The extract which is still in liquid form, has several weaknesses, such as unstable in enviroment changes, low flexibility uses and trouble in material handling and transportation. For these reasons, nanoencapsulation technique using β-siklodextrin as matrix agent is an alternative way. The aims of this research were characterization of total pheno...
Article
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One of the issues in bioethanol production as fuel is the low productivity of fermentation process. Application of serial continuous bioreactor could increase the fermentation productivity. Series of bioreactor running in aerobic condition followed by anaerobic fermentation may resolve cell exhaustion and low substrate utilization problems, as pre-...
Article
Full-text available
Zeolite is high porous natural mining material and usually used as absorber. Particle size reduction of zeolite to nano-sized is expected improve absorption, because with the smaller particle size of materials, uptake extensive areas will increase. Nano zeolite-KMnO4 as ethylene absorber is expected better than existing commercial ethylene absorber...
Article
Full-text available
p>Xylanase is an extracellular enzyme produced by microorganisms. This enzyme is able to hydrolise xylane (hemicellulose) to produce xylooligosaccharide and xylose. Thermoalkaliphilic xylanase is an agent that can be used as a substitute in the pulp whitening process instead of chlorine. A study was done to isolate, identificate of bacteria and cha...
Article
Full-text available
The purposes of this research were to obtain nanometer-sized fiber with electrospinning method and to produce bioplastics with addition of diethylen glicol (DEG) plasticizer. This research was conducted through several stages, namely extraction of cellulose, synthesis of cellulose acetate, sythesis of nanofibers and production of bioplastics. In th...
Article
Full-text available
The purposes of this research were to obtain nanometer-sized fiber with electrospinning method and to produce bioplastics with addition of diethylen glicol (DEG) plasticizer. This research was conducted through several stages, namely extraction of cellulose, synthesis of cellulose acetate, sythesis of nanofibers and production of bioplastics. In th...
Article
Full-text available
Roselle calyx is rich with phenolic substances. In this study, microwave-assisted extraction was used to extract the phenolic compounds from Roselle calyx. By using response surface methodology, the effects of microwave output power, ethanol concentration and extraction time on total phenols yield were investigated and the optimal conditions were d...
Article
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This study highlighted the effect of microwave pretreatment on betung bamboo on the chemical structural and morphological changes. The hydrothermal condition was performed in varying power loading (330, 550, and 770 W) and microwave irradition time (5-12.5 min). FTIR spectroscopy, X-Ray diffraction and SEM-EDS analysis were utilized to confirm the...