Use permeate output of milk ultrafiltration to produce functional doum beverages
Abstract: Probiotics have several advantages for human health. While looking for alternative food matrices, the suitability of doum extract as a raw material for the production of probiotic beverages with Bifidobacterium befidum was investigated. It was prepared by blending cold permeate with 5%, 10% or 15% powder doum (w doum Iv permeate) and dipping overnight, then the mixing was filtered After that, sucrose 8% was added to filtrates, then pasteurized to 72°C at 3 min. After pasteurization, the mixtures were cooled at 36°C then bifidobacteria (Bifidibacterium befidum) were added to mixtures (1g/100 ml) and incubated at 36°C/3 h. The final products were chemically, microbiologically and organoleptically evaluated during storage at 3, 7 and 14 days in refrigerator at 4±1°C. The results revealed to gradually decrease in total polyphenols and flavonoids contents at 3, 7 and 14 days, respectively. The highly decrease in total polyphenols and flavonoids contents was shown in formula 2 which contained 5% doum. In contrast, lycopene and p-carotene were highly decreased in formula 4 (15% doum). Also, negligible decrease was noticed in saponins, tannins, Zn and Fe contents during refrigeration storage. These results due to bifidobacteria used polyphenols, flavonioids, lycopene and β-carotene to stable of bifidobacteria count during storage, while bifidobacteria left saponins, tannins, Zn and Fe without use.
The decrement to total bacterial count and spore forms counts in all formulas may due to the role of antioxidant as antimicrobial. Also, reduced the number of bifidobacteria during storage, but the minimum allowable is due to the use of antioxidants that limit the deterioration of a number of beneficial bacteria.
Sensory evaluation of doum indicated that flavor, color and, appearance values were increased gradient till 7 days storage then the values were decreased significantly at the end of experiment (after 14 days). Also, formula was contained 10% doum was better than other formulas.
Publication year 2012
Pages 495-506
Availability location معهد بحوث الانتاج الحيواني- شارع نادي الصيد- دقى- جيزة
Availability number
Organization Name
serial title Journal of Biol. Chem. Environ. Sci, 2012, Vol. 7(3): 495-506
ISSN 1687-5478
Author(s) from ARC
AGROVOC
TERMS		 Bifidobacterium. Doumea alula. Flavonoids. Iron. Lycopene. Pasteurization. Polyphenols. Probiotics. Saponins. Tannins. Zinc.
Publication Type Journal
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