STUDY OF THE QUALITY OF BLACK ROWAN FRUITS AND OBTAINING EXTRACTS AND CONCENTRATES FROM THEM

The article presents the results of the study of the polyphenols, flavonoids, β-carotene content in the black rowan fruits required to maintain human health, and it is determined that the content of polyphenols in the fruits of the rowan picked in the foothills of Kainazar village of Yenbekshikazakh district is 3.77%, in the fruits picked in the foothills of Akbulak village of Talgar district is 4.07%, in the fruits picked in the foothills of Karabulak village of Talgar district is 4.4%. The content of flavonoids is respectively 2.24; 2.65; 2.71 %mg, β-carotene is 0.185; 0.203 and 0.229 mg. The content of polyphenols, flavonoids and β-carotene in fruits picked in the foothills of Karabulak village exceeds the similar indicators of black rowan fruits growing in the foothills of Kaynazar village and Akbulak village. The technological process of obtaining extracts and concentrates from the fruits of the black rowan fruits was developed. The technological process of obtaining alcoholic extract and concentrate from fruits included the following steps: preparing plant raw materials and extractant, grinding and sieving, extracting in an ultrasonic extractor, filtering, purifying, concentrating, pasteurizing and packaging. The following extraction modes of samples were proposed: ultrasonic wave frequency of 35kHz, extraction time of 45 minutes, temperature of 50°C, and concentration of obtained extracts was performed by vacuum evaporation method using IKA RV-10 apparatus at 40-50°C and pressure of 800 mbar.

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