International Journal of Advance Tropical Food (IJATF)
Vol 2, No 1 (2020): May

Effect of Cryoprotectant Concentration on Starter Culture Viability Sinbiotic Yogurt with Freeze Dried Sweet Potato Extract Supplementation

Agustina Intan Niken Tari (Universitas Veteran Bangun Nusantara)
Catur Budi Handayani (Universitas Veteran Bangun Nusantara)
Sri Hartati (Universitas Veteran Bangun Nusantara)

Article Info

Publish Date
20 Sep 2020


Synbiotic yogurt with purple sweet potato extract supplementation as prebiotics and Lactobacillus plantarum Dad 13 isolated from buttermilk as probiotics has potential as functional food, but requires low storage temperatures. The freeze drying technique requires cryoprotectant as a protective material for products such as yogurt. The purpose of this study was to determine the effect of sucrose concentration on the level of viability of  Lactic Acid Bacteria and Lactobacillus plantarum. This study used a Completely Randomized Design with one factor : concentration of sucrose as cryoprotectant: 0%, 2.5%, 5%, 7.5%, and was carried out in three replications. The results showed that the concentration of sucrose significantly affected the yield of freeze dried synbiotic yogurt, total Lactic Acid Bacteria (LAB) after freeze drying, and total Lactobacillus plantarum before and after freeze drying, but did not significantly total amount of LAB before freeze drying. The best treatment, shown in frozen dried synbiotic yogurt with a sucrose cryoprotectant concentration of 5%. The treatment has the following characteristics: yield, 14.797%, total Lactic Acid Bacteria  1.98x 109 CFU / ml before freeze drying, 9.28x 108 CFU / ml after freeze drying, total Lactobacillus plantarum 8.23 x 108 CFU / ml before freeze drying and 6.81 x 108 CFU / ml after freeze drying.

Copyrights © 2020

Journal Info





Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Medicine & Pharmacology


International Journal of Advance Tropical Food (IJATF) is a peer-reviewed open-access international scientific journal who aims to provide an international platform for researchers, professionals, lecturer, and educational practitioners on all topics related to advance in tropical food issues, ...