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Effect of Inoculation Time for Indigenous Probiotic Bacteria Lactobacillus plantarum DAD-13 on the Physiochemical and Organoleptic Properties of Yoghurt Drink: Pengaruh Waktu Inokulasi Bakteri Probiotik Indigenous Lactobacillus plantarum DAD-13 terhadap Sifat Fisikokimia dan Organoleptik Yoghurt Drink Komalasari, Husnita; Karni, Ine; Heldiyanti, Rina; Arianto, Ahmad Rudi; Rahayu, Endang Sutriswati
JITIPARI (Jurnal Ilmiah Teknologi dan Industri Pangan UNISRI) Vol. 9 No. 1 (2024): JITIPARI
Publisher : Universitas Slamet Riyadi Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33061/jitipari.v9i1.10121

Abstract

Yoghurt drink is a product obtained from fermentation of milk by certain lactic acid bacteria. The aim of this research was to determine how the inoculation time of the indigenous probiotic bacteria Lactobacillus plantarum Dad-13 influences the physicochemical and organoleptic properties of functional plain yoghurt probiotic drink products. This research used an experimental method with a completely randomized design with a single factor, 4 treatments and 3 replications. Reaserch data were analyzed using diversity analysis and Duncan's multiple distance test at a significance level of 5% using SPSS and Minitab 17 software. The results showed that the use of probiotic bacteria significantly affected on viscosity, color L*, color a*, color b*,  °HUE, pH, total dissolved solid, and fat content, but did not significantly influenced on protein content. The use of probiotics as a starter in yoghurt drinks increased viscosity, color brightness, pH and fat content, and have a lower total dissolved solid. The best treatment in this study was joint-inoculation who had viscosity 290,67 mPa.s; color L* 89,46; color a* 2,92; color b* 1,61; °HUE 29,47; pH 5,00; total dissolved solid 16,67 °brix; fat content 2,34 %; and protein content 4,12%. For the scoring test, this treatment has a non-sour taste; the aroma is slightly sour; Slightly thick texture and homogeneous consistency. Meanwhile, the hedonic test has a neutral taste, aroma and texture as well as a color, appearance and consistency were quite liked by the panelists.
Analisis Struktur Genetik dan Filogenetik Bakteri Lactobacillus Plantarum yang Diisiolasi dari Produk Pangan Karni, Ine; Nalurita, Indah; Gemma Pravitri, Kartika; Naufali, Muhammad Nizhar; Meikapasa, Ni Wayan Putu
Food Scientia : Journal of Food Science and Technology Vol 4 No 1 (2024): January - June
Publisher : LPPM Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/fsj.v4i1.6488.2024

Abstract

Lactobacillus plantarum (L. plantarum) is a type of Lactic Acid Bacteria (LAB) that can convert glucose into lactic acid. L. plantarum can mostly be found in milk, meat, fermented vegetables, and the human digestive tract. The L. plantarum bacteria has several strains, each of which has a good function in food fermentation and health. To understand the historical development of an organism's evolution, it is necessary to use phylogeny as the basis for systematic science in biological evolution. The aim of this research was to determine the genetic structure and level of relationship between L. plantarum bacteria isolated from food products. The data used in this research is secondary data taken from GenBank in the form of nucleotide sequences from the bacterium L. plantarum which were then analyzed using clustal W in the Bioedit application, then genetic and phylogenetic structure analysis was carried out using the MEGA 7 application. The results showed that the probability of substitution was the highest. detected in base G, followed by bases A, T/U, and C. The L. plantarum strain that has the highest level of relationship is the strain with GenBank codes AY424355.1 and AJ640082.1 with a bootsrep value of 99. The resulting phylogenetic tree topology is monophyletic, which means that all members in the group come from a common ancestor who passed on genetic, morphological and biochemical characteristics to his descendants.