K. I. Prahesti, K. I.
Unknown Affiliation

Published : 2 Documents
Articles

Found 2 Documents
Search

CHARACTERISTICS AND MECHANISM OF GELATINATION OF DANGKE CURD BY PHYSICO-CHEMICAL PROPERTIES AND MICROSTRUCTURE Malaka, R.; Baco, S.; Prahesti, K. I.
Jurnal Ilmu dan Teknologi Peternakan Vol 4, No 2 (2015)
Publisher : Fakultas Peternakan, Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.655 KB)

Abstract

Dangke is a dairy product which is known as traditional cheese of Enrekang District, South Sulawesi. It is made by heated clotting of buffalo, cow, goat or sheep milk with addition of papaya sap (Carica papaya) or pineapple juice. Dangke has been well known by South Sulawesi community but information is very limited regarding to its characteristics with standardized quality. The objective of this study was to produce dangke with standardized quality (physical properties, chemical properties and microstructure) so that, at the end, this product can become a certified product having specific characteristics, which is in turn can be introduced nationally or internationally as a genuine product of South Sulawesi. It is expected that this Indonesian cheese will be increasingly popular as Cheddar (England); Gouda and Edan (Netherland); Emmental and Gruyere (Swiss); Limburger, Cammembert and Brie (France); Gorgonzola, Mozzarella, and Romano (Italy); Brunost (Norway); Damiati (Egypt) and so on. Dangke was prepared using 18 L of raw whole milk and heated at 75, 80, 85, 90, 95 and 100oC for 1 minute and coagulated by addition of papaya sap 0.3%, 0.4% and 0.5%, and added 1% of salt. Curd was poured to Dangke cheese template and pressed until compact. The cheese was packaged riped at approximately 5oC. Dangke was evaluated towards physical properties (hardness, pH, elasticity), chemical properties (percentages of fat, protein, and lactic acid) and microstructure. Hardness and elasticity determined by rheometer, pH values measured by using a Hanna-pH-meter. Microstructure was viewed by a fasecontrast and light microscope in 1000 x of magnification. Level of fat and protein were analyzed by proximate analysis. Percentage of lactic acid was evaluated by titratable acidity. Result of this study showed that higher heating temperature decreased protein and fat contents, as well as lactose but increased pH and lactic acid. The best structure and the highest protein content of dangke was obtained by heating temperature of 75oC with 0.5% papaya sap.
PHYSICAL PROPERTIES OF RAW MILK AND THE RELATION BETWEEN SANITATION AND HYGIENE OF MILK AND LISTERIA MONOCYTOGENES CONTAMINATION ON THE FARM PEOPLE IN SINJAI DISTRICT OF SOUTH SULAWESI Yuliati, F.; Malaka, R.; Prahesti, K. I.; Murpiningrum, E.
Jurnal Ilmu dan Teknologi Peternakan Vol 4, No 1 (2015)
Publisher : Fakultas Peternakan, Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.744 KB)

Abstract

Listeria monocytogenes is pathogenic bacteria causing disease outbreaks of food origin (food borne bacterial disease) that causes listeriosis in susceptible individuals. Listeria monocytogenes often easily contaminate milk and other livestock products. The aim of the research was to know the physical properties of raw milk and the relation between sanitation and hygiene of milk and Listeria monocytogenes contamination on the dairy farm in Sinjai District South of Sulawesi. In this research, eight samples of fresh milk were taken from local dairy farm. A direct observation was performed on the hygiene and the cage sanitation during milk processing. Then, the physical quality of the milk (specivic gravity, alcohol test, organoleptic examination, acidity). Listeria monocytogenes was detected by culturing on Listeria Selective Agar (LSA) media. The results of study showed that raw milk was contaminated with Listeria sp. In general, the physical quality of raw milk was satisfactory, however the result of alcohol test of milk showed that it was not so good. The presence of bacteria L. monocytogenes in the milk did not cause physical changes either in color, smell, consistency, acidity, or specific gravity. The contamination was closely related to the condition of hygiene and cage sanitation during the milk processing.