Physicochemical properties of goat milk yoghurt with synbiotics from inulin of mangrove apple and Lactobacillus plantarum

J.M.W. Wibawanti¹³, S. Mulyani², R. Hartanto¹ and A.M.Legowo²*

¹Universitas Diponegoro, Faculty of Animal and Agricultural Sciences, Department
of Animal Science, Semarang 50275, Central Java, Indonesia
²Universitas Diponegoro, Faculty of Animal and Agricultural Sciences, Department
of Food Technology, Semarang 50275, Central Java, Indonesia
³Universitas Muhammadiyah Purworejo, Faculty of Agricultural Science, Department of Animal Science, Purworejo 54151, Central Java, Indonesia
*Correspondence: anangmohlegowo@lecturer.undip.ac.id

Abstract:

Physicochemical changes could affect the quality of goat milk yoghurt. Yoghurt quality has been improved by incorporating a synbiotic derived from a prebiotic combined with probiotics. This study aimed to evaluate the effect of different concentrations of synbiotics (inulin of mangrove apple and Lactobacillus plantarum) in the physicochemical properties of goat’s milk yoghurt. This study used a Completely Randomized Design (CRD) with 5 treatments and 4 replications, with differences in the concentration of synbiotics as much as 0, 2, 4, 6, and 8%. The addition of synbiotics was significant (p < 0.05) in the sugar reduction, colour, and syneresis of yoghurt products. They did not significantly affect (p > 0.05) the firmness of yoghurt texture. This study provides support for the addition of synbiotics to improve physicochemical properties of goat’s milk yogurt.

Key words:

Optimization of the recipe of yoghurt with additives and control of some quality attributes of new yoghurt recipe

E. Skripleva¹,* and T. Arseneva²

¹Institute of Refrigeration and Biotechnologies, ITMO University, Lomonosova street 9, 191002, Saint-Petersburg, Russia; *Correspondence: 4ernamurka@rambler.ru 2Institute of Refrigeration and Biotechnologies, ITMO University, Lomonosova street 9, 191002, Saint-Petersburg, Russia

Abstract:

According to the data and the results of clinical trials received in Nutrition Institute of ‘Russian Academy of Medical Sciences’, it was found that 80% of Russians suffer from lack of selenium. Saint-Petersburg University Innovation Company ‘Littoral’ has developed a biologically active food supplement ‘Selenium Alga plus’. The aim of this research was to investigate the possibility of using dietary supplement ‘Selenium Alga Plus’ in yoghurt manufacture. Almost all groups of the population consume such fermented milk drink as yogurt, so that it is considered that this method increasing selenium as the most effective. People suffering from diabetes may have lack of selenium in the organism, as well as healthy people. Since traditional yogurt contains 11% of sucrose, it is necessary to choose sweetening components with vegetable origin. Selecting sweetening components of vegetable origin we pursued the dual purpose. Firstly, we created a sweet product, which would be a source of organic selenium. Therefore the sucrose was replaced with the plant origin sweeteners such as syrup of Jerusalem artichoke and stevioside. Secondly, it was the development of technology and composition of functional food product, intended not only for mass consumption, but also for people suffer from diabetes. It becomes possible due to the absence of sucrose, the presence of selenium and Jerusalem artichoke, which are able to reduce the blood sugar level.

Key words:

Jerusalem artichoke, nutrition, selenium, stevioside, yogurt