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Search Results: 1 - 10 of 71015 matches for " MARIA BINTANG "
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The Comparative Ability of Antioxidant Activity of Piper crocatum in Inhibiting Fatty Acid Oxidation and Free Radical Scavenging
HAYATI Journal of Biosciences , 2010,
Abstract: The excessive number of free radicals in human body could increase lipid peroxides and causes a variety of degenerative diseases. Piper crocatum is a plant containing natural chemicals that may have an antioxidant ability to inhibit fatty acid oxidation and reduce free radicals, however, there is no published scientific reports up to now. Therefore, the objective of this research is to study the ability of ethanol extract of P. crocatum as an antioxidant. The leaves of P. crocatum (25 g) were extracted with 100 ml of 70% ethanol. Antioxidant activity was measured by thiobarbituric acid method and compared with 2,2-diphenil-1-picryl hydrazyl method with α-tocopherol as the standard antioxidant. The results showed that the extract of 200 ppm inhibited fatty acids oxidation by 80.40% and IC50 for free radical scavenging was 85.82 ppm. There was no significant different (α = 0.05) inhibition of unsaturated fatty acids oxidation between the sample and α-tocopherol at 200 ppm. This study suggested that the leaves extract of P. crocatum has a potential natural antioxidant.
Toxicity Study of Antidiabetics Functional Drink of Piper crocatum and Cinnamomum burmannii
HAYATI Journal of Biosciences , 2012,
Abstract: Piper crocatum and Cinnamomum burmannii formulations is known to be a new diabetes functional drink. Thus, its toxicological profile needs to be studied. At present, the formulation was evaluated for the repeated dose toxicity study. The Sprague dawley albino rats were treated with P. crocatum and C. burmannii formulations (0, 630, 1260, and 1890 mg/kg) and administered orally for a period of 28 days in albino rats. The effects on body weight, food and water consumption, organ weight, hematology, clinical biochemistry as well as histology were studied. There were no significant differences in the body weight, organ weights and feeding habits between control and treated animals. Hematological analysis showed no marked differences in any of the parameters examined in either the control or treated groups. There were no significant changes that occurred in the blood chemistry analysis including glucose, cholesterol, triglycerides, creatinine, SGPT, and SGOT in experimental animals. Pathologically, neither gross abnormalities nor histopathological changes were observed. The formulation of P. crocatum and C. burmannii was found safe in repeated dose toxicity studies.
α-Glucosidase Inhibitory Activity and Hypoglycemic Effect of Phaleria macrocarpa Fruit Pericarp Extracts by Oral Administration to Rats
Sri Sugiwati,Leonardus B.S. Kardono,Maria Bintang
Journal of Applied Sciences , 2006,
Abstract: α-Glucosidase in vitro inhibitory activity and hypoglycemic effect by oral administration in rats of Phaleria macrocarpa fruit extracts have been conducted. The hypoglycemic activity of α-glucosidase inhibitor is resulted from a competitive, reversible inhibition of pancreatic α-amylase and membrane bound intestinal hydrolase enzyme such as isomaltase, maltase and sucrase. In diabetic patients, inhibition of these enzymes results delayed glucose absorption and a lowering a postprandial hyperglycemia. The purpose of this study is to investigate the hypoglycemic activity of fruit extracts of Phaleria macrocarpa (Scheff) Boerl. as an α-glucosidase inhibitors by in vitro and in vivo experiments. α-Glucosidase inhibitory activity evaluation showed that the n-butanol of young and ripe fruit extracts have the highest activity, followed by ethyl-acetate and methanol extracts. By oral administration to rats, the hypoglycemic activity has been showed that the boiled water extract of ripe fruit with dose of 6.20x10-3 and 1.24x10-3 mg g-1 , n-butanol extract of ripe fruit with dose of 1.81x10-3 and 3.62x10-3 mg g-1, respectively, decreased the blood glucose concentration of rats after treated with 80% w/v sugar solution, being comparable to those of acarbose 1.00x10-3 mg g-1 rat as the positive control.
BIOTROPIA : the Southeast Asian Journal of Tropical Biology , 2005,
Abstract: This experiment was conducted to study the effect of 3, 5, 3'-triiodothyroninc (Tj) hormone on nucleic acid and protein content of the muscle and the growth of giant gouramy, Osphronemus gouramy Lac. Five experimental diets, which contain isocaloric diets, but different in T3 hormone level were used in this experiment (0.0, 2.5, 5.0, 7.5, and 10.0 mg T3 hormone/kg diet). The experimental diets were tested to three different groups offish for sixty days feeding trial. Fish body weight in groups I, II, and III were 0.39-0.42 g/fish; 19.11 -21.99 g/fish, and 37.52-40.79 g/fish, respectively. The results showed that the highest RNA, DNA concentration and RNA/DNA ratio of the muscle were produced by 10.0 mg T3 hormone/kg diet for group I and II; and 2.5 mg T3 hormone/kg diet for group III. Similar results also were found for the protein content of the whole body, protein retention, and the daily growth rate of the fish.
The Relationships of Body Weight with Onset and Duration of Estrous in Kacang Goat
Hastono,IAK Bintang
Journal of Animal Production , 2008,
Abstract: The objectives of the study were to know relationships between body weight and onset of estrous and duration of estrous. Data of body weight, onset of estrous and duration of estrous resulted from 36 Kacang goats were subjected to simple correlation and regression analysis. Coefficient correlation and regression equation of body weight I (23.33 ± 2.24 kg) to onset of estrous (r = 0.50, Y =126.28 + 0.49 X), duration of estrous (r = 0.28, Y = 35.32 + 0.73 X), and of body weight II (27.92 ± 2.24 kg) to onset of estrous (r = 0.26, Y =37.42 + 0.44 X), duration of estrous (r = 0.73, Y =26.30 + 0.31 X). It be can concluded that body weight I closely affected to the onset of estrous while body weight II closely affected to the duration of estrous. (Animal Production 10(3): 147-150 (2008) Key Words: Goat, body weight, estrous, Kacang
Antifouling Activity of Bacterial Symbionts of Seagrasses against Marine Biofilm-Forming Bacteria  [PDF]
Bintang Marhaeni, Ocky Karna Radjasa, Miftahuddin Majid Khoeri, Agus Sabdono, Dietriech G. Bengen, Herawati Sudoyo
Journal of Environmental Protection (JEP) , 2011, DOI: 10.4236/jep.2011.29143
Abstract: Marine biofouling has been regarded as a serious problem in the marine environment. The application of TBT and other heavy metal-based antifoulants has created another environmental problem. The present study explored the possible role of baterial symbionts of seagrasses Thalassia hemprichii, and Enhalus acoroides, which were successfully screened for antifouling activity against marine biofilm-forming bacteria isolated from the surrounding colonies of seagrasses. Bacterial symbionts were isolated and tested against biofilm-forming bacteria resulted in 4 bacterial symbionts capable of inhibiting the growth biofilm-forming isolates. Molecular identification based on 16S rRNA gene sequences revealed that the active bacterial symbionts belonged to the members of the genera Bacillus and Virgibacillus. Further tests of the crude extracts of the active bacterial symbionts supported the potential of these symbionts as the alternative source of environmentally friendly marine antifoulants.
Intellectual Capital dan Ukuran Fundamental Kinerja Keuangan Perusahaan
Ceicilia Bintang Hari Yudhanti,Josepha C. Shanti
Jurnal Akuntansi dan Keuangan , 2011,
Abstract: This study aims to examine the effect of intellectual capital and the fundamental measurements of company financial performance. This study also used several control variables, namely size and type of industry. Samples used in this study is the type of company that intensively used the intellectual capital, that is the service industry. The hypothesis are tested using multiple regression. Intellectual capital in the service industry showed the influence to the company's financial performance. External size of the companies used to measure the intellectual capital is market-to-book value. Market responds to the company's profitability and company’s productivity.
Antibacterial Activity of Garlic Extract Against some Pathogenic Animal Bacteria
M. Safithri,M. Bintang,M. Poeloengan
Media Peternakan , 2011,
Abstract: The antimicrobial activity of garlic extract against Gram-positive and Gram-negative bacterial isolates was well studied. However, reports on antibacterial activity of garlic extract against some pathogenic bacteria in animals in Indonesia, are still limited. Therefore, the aim of this study was to evaluate the antibacterial activity of water and ethanol extracts of garlic against Salmonella typhimurium in chickens, and Streptococcus agalactie, Escherichia coli, and Staphylococcus aureus causing mastitis in dairy cows in Indonesia. A filtrate of fresh garlic was used to determine the antibacterial activity against S. typhimurium at concentrations of 5%, 10%, 20%, 30%, and 40% w/v, whereas, the antibacterial activity of water and ethanol extracts was determined against S. agalactie, E. coli, and S. aureus at concentrations of 5%, 10%, 15%, 20%, and 25% w/v. Results showed that antibacterial activity of 30% garlic filtrate was equivalent to 10% tetracycline. Meanwhile, antibacterial activity of garlic aqueous extract on mastitis bacteria was better than that of the garlic ethanol extract. Aqueous extract of garlic at 20% had the same antibacterial activity as 0.01% ampicillin on mastitis bacteria. Filtrates of fresh garlic can be used to inhibit growth of S. typhimurium and mastitis bacteria.
Kajian Antibakteri Temulawak, Jahe dan Bawang Putih terhadap Salmonella typhimurium serta Pengaruh Bawang Putih terhadap Performans dan Respon Imun Ayam Pedaging
K. G. Wiryawan,S. Suharti,M. Bintang
Media Peternakan , 2005,
Abstract: This research was conducted to investigate the antibacterial activity of powder of temulawak, ginger and garlic to S.typhimurium using modified agar well method. Preliminary study showed that garlic powder had the best antibacterial activity, therefore it was further tested in a feeding trial to evaluate the effect on growth performance and immune response in broiler chicken challenged with S. typhimurium (ST). Experimental treatments were arranged in Completely Randomized Design with four treatment and three replications (Negative control, positive control, garlic powder and tetracycline). Seventy-two Day-Old-Chickens with body weight 46,7 g strain “Hubbard Wonokoyo” were used in a 28 days experiment. Broiler chickens were fed garlic powder and tetracycline diets for 10 days and then challenged orally with ST 4,1 x 1011 cfu. Body weight, feed intake and salmonella colony in faeces were monitored. Blood serum was collected at 18-d after infection. Results indicated that there was no significant effect of garlic powder on body weight and feed intake, but feed intake tended to decrease. However, feed conversion ratio of ration with garlic powder was better than rations with tetracycline and other treatments. Salmonella population in faeces also decreased with addition of garlic powder in diets. Total protein serum was influenced by disease challenged. Serum immunoglobulin (gamma globulin) was not influenced by disease challenged, but addition garlic powder in diet tended to increase gamma-globulin concentration. It can be concluded that garlic powder has antibacterial activity to S.typhimurium. Furthermore, this result indicated that some beneficial effect of dietary garlic powder at 2,5% supplementation on growth performance and no effect on immune response in the presence of ST-challenge.
Non-Contact Translation-Rotation Sensor Using Combined Effects of Magnetostriction and Piezoelectricity
Bintang Yang,Qingwei Liu,Ting Zhang,Yudong Cao,Zhiqiang Feng,Guang Meng
Sensors , 2012, DOI: 10.3390/s121013829
Abstract: Precise displacement sensors are an important topic in precision engineering. At present, this type of sensors typically have a single feature of either translation or rotation measurement. They are also inconvenient to integrate with the host devices. In this report we propose a new kind of sensor that enables both translation and rotation measurement by using the combined effect of magnetostriction and piezoelectricity. As a proof of concept, we experimentally realized a prototype of non-contact translation-rotation precise sensor. In the current research stage, through both theoretical and experimental study, the non-contact displacement sensor is shown to be feasible for measuring both translation and rotation either in coarse or fine measurement. Moreover, owing to its compact, rigid structure and fewer components, it can be easily embedded in host equipment.
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