Effect of alcoholic extract of Sheng and Ziziphora medicinal plants on physico-chemical properties and microbial quality of set yogurt
Journal Title: Journal of Herbal Drugs - Year 2017, Vol 8, Issue 3
Abstract
Background & Aim: Natural compounds can prolong the shelf life of food by inhibiting the growth of pathogenic and spoilage microorganisms. The purpose of this study was to investigate the effect of Sheng and Ziziphora alcoholic extracts (at concentrations of 500, 1000 and 1500 ppm) on physico chemical properties and microbial quality of yogurt. Experimental: The sterilized extracts of the above plants were added to the yoghurt formulations in concentrations of 500, 1000 and 1500 ppm under sterile conditions. After inoculation, the inoculated milk was incubated at 45 ° C to reach 4 pH for approximately 3 hours. After reaching the desired pH, the yoghurts are cooled to a temperature of 6 ° C and then, at the same temperature were stored in order to undergo a secondary course of acidifying and producing aromatic compounds. After that, the physicochemical and microbial properties of yogurt were evaluated for 20 days on days 0, 5, 10, 15 and 20. Results & Discussion: Results showed thataddition of Sheng extract can control the acidity in yogurt and prevent yogurt from getting sour over time. It was found that the best concentration of Sheng extract for controlling acidity in yogurt and preventing it from being sourded over time was 1500 ppm. Adding both extracts did not have a negative effect on the viscosity of yogurt. In the case of sheng concentration of 1500 and Ziziphora with a concentration of 500 ppm, were more effective on viscosity over storage time. Also, adding both Shang and Ziziphora extracts at a concentration of 1500 ppm increased the shelf life of yogurt by reducing the growth of molds and yeasts. Industrial/ Practical recommendation: With the addition of alcoholic extract of Sheng and Ziziphora herbs to set yogurt, a product with a longer shelf life and expire time of more than 20 days can be produced.
Authors and Affiliations
Elaheh Nosouhiyan; Javad Keramat; Mohammad Goli
Keywords
Related Articles
- EP ID EP23556
- DOI http://dx.doi.org/10.14196/JHD.2018.197
- Views 408
- Downloads 19
The effect of salinity on seed yield and oil of Silybum marianum (L.) Gaertn
Background & Aim: Milk thistle [Silybum marianum (L.) Gaertn] is an annual or biennial plant, native to the Mediterranean area, which has spread in north and south of Iran. A fruit of milk thistle contains a relatively h...
Effects of some channelling agents on the compaction properties of the mixed stem bark extracts of Anogeissus leiocarpus and Prosopis africana
Background & Aim: The hot water extract of a mixture of Anogeissus leiocarpus and Prosopis africana is widely used in the northern part of Nigeria for the treatment and management of asthma. Since investigations of it...
Assesment of different DNA extraction methods in medicinal plants
Medicinal plants have high importance in medicine and pharmacogonosy because of their secondary metabolites. Essential oils, antioxidants and flavonoids are the major compounds of many medicinal plants. These compounds e...
Effect of salinity on vegetative growth, antioxidant and defensive enzymes in ginger (Zingber officinale Roscoe.)
Background & Aim: Ginger is common named Zingber officinale Roscoe. belongs to Zingiberaceae family which extensively used to pharmaceutic industries in addition to food industries uses. Dut to Iran is located at world s...
Regulation of Intestinal GLP-1 and GLUT2 genes underlie hypoglycemia in Desplatsia subericarpa (Bocq)-Fed Wistar Rats
Background & Aim: Indigenous people of West Africa use the wholeleaf of Desplatsia subericarpa (Bocq) in anti-diabetic soup delicacy. This study was designed to validate the anti-diabetic claims and delineating possibl...