Incorporation of probioics (Lactobacillus acidophilus La-5) in development of non dairy ice cream

Yin, Yee Wen (2010) Incorporation of probioics (Lactobacillus acidophilus La-5) in development of non dairy ice cream. Universiti Malaysia Sabah. (Unpublished)

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Abstract

This study evaluated the effect of a probiotic bacteria (Lactobacillus acidophilus, La-5) added solely or together with 4% prebiotic inulin (Fribuline® D52), cryoprotectant: 4%sago starch or 4%pectin individually on probiotic viable count of fermented non dairy ice cream during storage at -20°C for up to 21 days. There are no significant changes of ice cream pH and titratable acidity during freezing storage of 21 days. Probiotic ice cream with 4% pectin has the highest mean viscosity of 66.8 Pa.s. First dripping time and complete melting times of the four ice cream formulations were statistically different (p<0.05) in which probiotic ice cream with 4% pectin had the longest mean score of 3346 and 6525 seconds respectively. The effect of the freezing process on probiotic microorganism viability was only significant (p<O.05) between counts made before and after freezing in control" sample probiotic ice cream and probiotic ice cream with 4% inulin in which the count decrease around 2.1 to 2.22 logarithmic units respectively. Viable count of L. acidophilus in probiotic ice cream with 4% inulin had show a significant reduction of count by 1.33 log units after 14 days. Viable count for control sample and ice cream with 4% pectin and 4% sago starch did not vary during the storage of 21 days. Ice cream with 4% sago starch had the highest count followed by ice cream with 4% pectin addition after 21days. There is no morphology cell damage detected on all ice cream samples that was kept for one week under scanning electron microscope.

Item Type: Academic Exercise
Uncontrolled Keywords: Probiotic bacteria, Lactobacillus acidophilus, Probiotic ice cream
Subjects: ?? TX642-840 ??
Divisions: SCHOOL > School of Food Science and Nutrition
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 26 Sep 2012 07:01
Last Modified: 13 Oct 2017 01:27
URI: http://eprints.ums.edu.my/id/eprint/4931

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