PENGARUH LAMA WAKTU PENYIMPANAN TERHADAP pH DAN KOEFISIEN SERAP SINAR GAMMA PADA SUSU

Abstract

It has been researched about storage time effect of milk toward pH and gamma rays absorption coefficient. The milk that have been used in these research was powder of milk, liquid milk and pure milk which get from Faculty of Animal Science of Diponegoro University. Detectors that used in this research were NaI(Tl) detector and gamma rays which source from Co-60. The pH changes from milk sample was monitoring with pH meters. In this researches has been examined the values from pH changes and gamma rays amount after passing the milk with time interval between 20 minutes to 5 hours. The result showed that the longer milk stored, gamma rays absorption coefficient will be increase and pH of milk will be decrease. The fastest pH changes founded at pure milk and the biggest gamma rays absorption coefficient founded at liquid milk