|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5740085||1412156||2018||8 صفحه PDF||ندارد||دانلود کنید|
â¢UHPH processing was evaluated as a potential technology for tiger nutsâ milk stabilization.â¢UHPH-treated beverages showed better microbial shelf-life than the conventional homogenized-pasteurized product.â¢Sensory evaluation suggested a consumersâ acceptability towards the UHPH-treated products.
Tiger nutsâ milk beverages are highly perishable products. For this reason, the interest of food industry for their commercialization makes necessary the application of preservation treatments to prolong their shelf-life. In the current study, the effect of ultra-high pressure homogenization (UHPH) on the microbiological and sensory qualities of tiger nutsâ milk beverage was evaluated. Characteristics of UHPH-treated products (at 200 and 300Â MPa, with inlet temperature of 40Â Â°C) were compared with those of raw (RP) and conventionally homogenized-pasteurized (H-P) beverages, after treatment and during cold storage at 4Â Â°C. Microbiological quality of beverages was studied by enumerating total counts, psychrotrophic bacteria, lactobacilli, enterobacteria, molds and yeasts, and mesophilic spores. Evolution of color and sensory characteristics of beverages were also determined. Microbiological shelf-life of the tiger nutsâ milk beverages was extended from 3 to 25, 30 and 57 days by applying H-P and UHPH treatments at 200 and 300Â MPa, respectively. Color of beverages was the only attribute that differentiated UHPH samples from the others, with greater luminosity and whiteness. Hence, UHPH treatments showed to be an alternative to the conventional H-P for obtaining tiger nutsâ milk beverages with an improved microbiological shelf-life and good sensorial characteristics.
Journal: Food Microbiology - Volume 69, February 2018, Pages 143-150