Simorangkir, Ido Hosea Hasian and Prof. Dr. Ir. Lilik Eka Radiati,, MS., IPU. (2021) The Effects Of Ozonation And Refrigerator Storage On Total Plate Count, Ph, And Protein Content Of Milk. Sarjana thesis, Universitas Brawijaya.
Abstract
-
English Abstract
Milk is yellowish-white or bluish-white liquid resulted from mammalian udder gland secretion. The needs of milk in Indonesia continues to increase every year along with population growth and public awareness to consume food with complete nutritional content such as milk. Milk derived from dairy cows is a source of protein, fat, carbohydrates, minerals, and vitamins contained in perfect composition. The consumption of fresh milk also continues to increase where in 2017 the national consumption of cow’s fresh milk reached 1.261.503 tons while the national fresh milk production only reached 928.108,13 tons which means the national fresh milk production was unable to fulfill the national needs and must be fulfilled by milk import. One of the things that cause national milk production unable to fulfill the national milk needs is the low quality of fresh milk produced from the local farmers. Milk produced from local farmers will be distributed first to the milk collection point and then sent to the village cooperative unit to test the milk quality whether it is decent to be consumed or sent to the milk processing industry. One of milk quality indicators is bacteria contamination, the limit of bacteria contamination based on BSN (2011) are: Total Plate Count (TPC) 106 CFU/ml, Staphylococcus aureus 102 CFU/ml and Enterobacteriaceae 103 CFU/ml. Various efforts are needed to extend the shelf life of milk and reduce the amount of bacterial contamination without damaging the milk nutritional quality, so far these efforts have been carried out by heating methods such as sterilization, Ultra High Temperature (UHT) and pasteurization. One of the compounds that are commonly used for sterilization in the food sector is ozone with the ozonation method, but ozone has not been widely applied in milk sterilization. Further research needs to be done on the effectiveness of ozone to eliminate pathogenic bacteria in milk. Ozone gas, the molecular triatomic form of oxygen has been widely researched and used in the food industry for tools surface cleaning and the treatment of raw materials. Ozone has a master bactericidal effect on both Gram-positive and Gram-negative, due to its high oxidation potential. The objective of this research is to determine the effect of ozonation on milk shelf life stored in refrigerator analyzed from microbiological and chemical quality of milk. This research was conducted from August to September 2020 at Laboratory of Animal Products Technology, Animal Science Faculty, Brawijaya University, Malang. The research method was Nested Experimental Design with 2 types of milk and 5 treatments nested in milk and continued by Duncan Multiple Range Test if there was significant difference. The results showed that milk types and refrigerator storage nested in milk had a highly significant effect (P<0.01) on TPC. Milk types and refrigerator storage nested in milk had a highly significant effect (P<0.01) on pH. Milk types had a highly significant effect (P<0.01) on protein content. Refrigerator storage nested in milk had a significant effect (P<0.05) on protein content. Suggestion for further research, it could be done a research about ozone half life in milk during storage.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0521050176 |
| Subjects: | 600 Technology (Applied sciences) > 636 Animal husbandry |
| Divisions: | Fakultas Peternakan > Peternakan |
| Depositing User: | Unnamed user with username nova |
| Date Deposited: | 17 Jan 2022 07:10 |
| Last Modified: | 25 Feb 2022 03:47 |
| URI: | http://repository.ub.ac.id/id/eprint/188413 |
![[thumbnail of DALAM MASAEMBARGO]](http://repository.ub.ac.id/style/images/fileicons/text.png) |
Text (DALAM MASAEMBARGO)
Ido Hosea Hasian Simorangkir.pdf Restricted to Registered users only until 31 December 2023. Download (1MB) |
Actions (login required)
 |
View Item |