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All Journal Hasanuddin Journal of Animal Science (HAJAS)
Ratmawati Malaka
Faculty of Animal Husbandry, Hasanuddin University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Economics, Econometrics & Finance Immunology & microbiology

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The Physicochemical Properties of Goat Skin Gelatin at Different Ages With the Use of Lactobacillus plantarum and Acetic Acid as a Pretreatment Hasma Hasma; Effendi Abustam; Ratmawati Malaka; Muhammad Irfan Said; Asmuddin Natsir
Hasanuddin Journal of Animal Science (HAJAS) Vol. 1, No. 2 (2019)
Publisher : Faculty of Animal Science, Hasanuddin University, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/hajas.v1i2.8150

Abstract

ABSTRACT Pretreatment of chemical acids using organic chemicals has been widely applied, while pretreatment using microbial Lactobacillus plantarum to form ossein in goat skin has not been done much. Application of Lactic Acid Bacteria (LAB) microbial species L. plantarum is thought to affect health and environment friendly. This study aims to determine the characteristics of goat skin gelatin at different ages of L. plantarum 1uhcc pretreatment and acetic acid (CH3COOH). Each treatment was repeated 3 times. The study design used a Split Plot Design with acid source treatment as the main plot and the age of goats 1, 2 and 3 years as subplots. The results showed a very significant effect (P<0.01) between the age of the goat with gel strength, pH, viscosity and color. The highest gel strength and viscosity at 1 year of age with L.plantarum pretreatment respectively (441.37±0.78 g bloom) and (9.22±0.09 cP). Goat skin gelatin has the highest pH at 1 year of age with L.plantarum 5.24±0.16. Similarly, the effect of gelatin (P<0.05) with a brightness level (L) 76.38±1.10 and redness (a) 11.13±1.58 affect the age of goats and acidic sources while yellowish (b) 33.81±2.34 only affects the acid source. Age of goats with different acid pretreatment has an impact on the physicochemical properties of goat skin gelatin. Goat age 1 year with L.plantarum pretreatment showed optimal results.
Evaluation of Pathogenic Contamination of the Liver and Meat from Traditional Markets in Makassar Ratmawati Malaka; Kusumandari Indah Prahesti; Hajrawati Hajrawati
Hasanuddin Journal of Animal Science (HAJAS) Vol. 2 No. 2 (2020)
Publisher : Faculty of Animal Science, Hasanuddin University, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/hajas.v2i2.13732

Abstract

Many factors influence the growth of microorganisms on and in meat, including temperature, moisture content, oxygen, pH, and meat nutrition. Meat is a medium that is very suitable for the growth of microorganisms because it has a highwater content of 68-75%, high nutrition, complete mineral content and a pH 5.3-6.5. Contamination of microorganisms on the surface of meat or carcass has started since the slaughter of livestock until the meat is consumed. The purpose of this study was to evaluate the presence of microorganism contamination in meat sold in traditional markets in Makassar. Beef and beef liver were taken from traditional markets in Makassar and then tested for Total Bacteria, Salmonella sp. as an indicator of pathogenic bacteria contamination in meat. The total bacterial contamination of beef and beef liver was still higher than the provisions of the Indonesian National Standard and the bacteria that could be suspected were Salmonella sp.
Co-Authors Asmuddin Natsir Effendi Abustam Hajrawati Hajrawati Hasma Hasma Kusumandari Indah Prahesti Muhammad Irfan Said