ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Survival and shelf life of Lactobacillus lactis 1464 in shrimp feed pellet after fluidized bed drying)

ผู้เขียน:มณีรัตน์ วิรุณพันธุ์, Wanticha Savedboworn, ดร.เพ็ญแข วันไชยธนวงศ์, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

In the present study, Lactobacillus lactis 1464 was attempted to be incorporated in shrimp feed pellets. The fresh culture (25% volume per weight) with and without pH adjustment was mixed into feed ingredients prior to the pelleting process at ambient temperature. The wet pellets were dried using a fluidized bed dryer at 50
C, 60
C, 70
C and 80
C to achieve a moisture content below 11%. The results indicated that the strain viability depended on the drying temperature with a viable cell number of approximately 106108 CFU/g and the pH of the culture was found to affect the strain viability during drying. At all drying temperatures, the strain survival after drying ranged from 75.94% to 92.28% at pH 3.8 and from 89.54% to 96.87% at pH 7.0. Moreover, the addition of protectants was found to enhance the strain survival during drying. In particular, milk powder and monosodium glutamate (MSG) exhibited significant (p < 0.05) protective effect on the viability at a high temperature of 80
C. During storage at 30
C, a high survival rate was found for the strain with MSG and acacia gum. Furthermore, the prediction model for long-term storage stability of the strainwas found to validate only at a low temperature of 4
C, in comparison to a high temperature of 30
C.

Article Info

Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 050, Issue 1, Jan 16 - Feb 16, Page 1 - 7 |  PDF |  Page