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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology
OKKY SETYAWATI DHARMAPUTRA
SEAMEO BIOTROP
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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ANTAGONISTIC EFFECT OF FOUR FUNGAL ISOLATES TO GANODERMA BONINENSE, THE CAUSAL AGENT OF BASAL STEM ROT OF OIL PALM OKKY SETYAWATI DHARMAPUTRA
BIOTROPIA No. 3 (1989)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.1989.0.3.99

Abstract

ANTAGONISTIC EFFECT OF FOUR FUNGAL ISOLATES TOGANODERMA BONINENSE, THE CAUSAL AGENT OF BASAL STEM ROT OF OIL PALM
DIETARY EXPOSURE ASSESSMENT FOR AFLATOXIN B FROM PROCESSED PEANUT PRODUCTS IN MUNICIPALITY OF BOGOR 1 OKKY SETYAWATI DHARMAPUTRA; SANTI AMBARWATI SANTI; INA RETNOWATI INA
BIOTROPIA Vol. 18 No. 1 (2011): BIOTROPIA Vol. 18 No. 1 June 2011
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2011.18.1.133

Abstract

A research on dietary exposure assessment for aflatoxin B (AFB1) fromprocessed peanutproducts in Municipality of Bogor was carried out. The objectives of this study were todetermine the contents of AFB1 in processed peanut products at retail levels, and to obtaininformation whether there is a risk to public health caused by the consumption of processedpeanut products contaminated by AFB1. Survey of processed peanut product consumptionwas carried out by interviewing each respondent using a questionnaire of weekly processedpeanut product consumption. Sampling of processed peanut products was conducted at thelocations where the respondents obtained processed peanut products. The number of roastedpeanuts with skin pods, flour-coated peanuts and or sauces samples was 33,respectively, while the number of and sauces samples was 18 and 12, respectively.The total number of processed peanut product sampleswas 129.AFB1contentwas determinedusingThin LayerChromatographymethod.Estimation of the dietary exposure assessmentwasdetermined using the actual survey data consisting of AFB1 content, consumption data andbody weight. The highest contaminated sample percentage and mean of AFB1 content wasfound in roasted peanuts with skin pods i.e. 42% of 33 samples and 43.2 μg/kg, respectively,followed by flour-coated peanuts (30% of 33 samples and 34.3 μg/kg), and or(21%of 33 samples and 17.1 μg/kg).Mean of estimated dietary exposure for AFB1 found inchildren was 15.2 ng kg bw day and 95 percentile exposure was 38.9 ng kg bw day , while inadults 9.0 ng kg bw day and 95 percentile exposure was 27.0 ng kg bw day . The excesscancer risk of AFB1 exposure in Bogor fromthis study on children and adults was calculated as193 and 115 cancers/year, respectively-1 -1 th -1 -1-1 -1 th -1 -1pecel gado-gadosiomay sataipecel gado-gado1.
REVIEW ON AFLATOXIN IN INDONESIAN FOOD- AND FEEDSTUFFS AND THEIR PRODUCTS OKKY SETYAWATI DHARMAPUTRA
BIOTROPIA No. 19 (2002)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1073.66 KB) | DOI: 10.11598/btb.2002.0.19.227

Abstract

 Aflatoxin is a human carcinogen that  could contaminate food- and feedstuffs, and hence is a major food quality problem throughout the world. Afiatoxin is produced by certain strains of AspergillusJlavus and //. parasiticus. A number of studies have been carried out in Indonesia on atlatoxin contamination in Indonesian food- and feedstuffs and their products from 1990 up to present. They were maize, maize product, peanuts, soybean and soybean meal, black and white pepper, feed ingredients; chicken and duck feeds. Samples were collected from farmers, traders (middlemen), retailers (markets), supermarkets, exporters; poultry and duck community-based farms; and feed mi l l  industries. High levels of aflatoxins were often found in maize, peanuts, chicken feed derived from markets, and duck feed. Low levels of aflatoxins were found in soybean meal and chicken feedstuff. Aflatoxins were not detected in soybean, black and white pepper. Other studies have also been carried out on the effect of carbondioxide (CO2), phosphine, black pepper extract and antagonistic fungi on aflatoxin production of  A. flavus in vitro\  and the effect of airtight storage, phosphine, ammonium hydroxide, fermentation process, bag types, and phosphine in combination with different bag types on atlatoxin contents of maize, peanuts and soybean meal. Some of these methods reduced aflatoxin contents significantly. Keywords: Aspergillus flavus I Aflatoxin / Food-and feed stuffs / Product
THE OCCURRENCE OF INSECTS AND FUNGI, AND AFLATOXIN B CONTAMINATION OF STORED SORGHUM IN DEMAK AND WONOGIRI REGENCIES, CENTRAL JAVA OKKY SETYAWATI DHARMAPUTRA; SANTI AMBARWATI SANTI; INA RETNOWATI INA
BIOTROPIA Vol. 18 No. 2 (2011): BIOTROPIA Vol. 18 No. 2 December 2011
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (147.353 KB) | DOI: 10.11598/btb.2011.18.2.246

Abstract

The objectives of this study were to collect informations on the method of postharvesthandling of sorghum and to investigate the moisture contents, insects infestation, fungalinfection, and aflatoxin B contents of stored sorghum grains collected from various stagesof the delivery chain in Demak and Wonogiri regencies, Central Java. In Demak regencysorghum cultivation was monoculture, variety cultivated was UPC-S1. In Wonogiri regencysorghum cultivation was intercropping with secondary crop and cassava. Sorghum varietiescultivated were Kawali, Numbu, ZH30, Mandau and Hibrida hybrids. There was a differencebetween the method of postharvest handling of sorghum at farmer and collector levels inDemak andWonogiri regencies. In general the method of postharvest handling of sorghum inDemak regency was more appropriate and more advance compared to that in Wonogiriregency. The moisture contents of sorghum at farmer as well as at collector level in Demakregency (13.0%) and Wonogiri regency (12.9%) were still lower that that of normal (safe)moisture content of sorghum. The number of insect species associated with sorghum invarious distribution level in Demak andWonogiri regencies was 10 and 17 species, respectively.The dominant insects species were and . The number offungal species found in sorghum at various distribution level in Demak andWonogiri regencieswas 23 species, respectively. In general, the dominant fungal species were ,and . In Demak regency aflatoxin B contents of sorghum atfarmer and collector levels were 22.50 and 15.45 ppb, respectively, while in Wonogiri regency2.27 and 10.28 ppb, respectively.insects, fungi, aflatoxin B , stored sorghum, Demak and Wonogiri regencies,Central Java
Co-Authors INA RETNOWATI INA SANTI AMBARWATI SANTI