processing time and temperature are augmented, a significant decrease in carotenoids
such as lycopene has been observed. On the other hand, the highest
stability of total phenolics and total antioxidant capacity of fruit
smoothies has been observed using the maximum amplitude level. US
may induce a negative effect on the sensorial properties of fruit juices,
due to the development of off-flavors and undesirable aromas. The latest
are more intense by increasing US intensity and duration of the US
treatment. On the other hand, increased treatment time and amplitude
levels cause an increase homogenization of food products due to the decrease
in fat globule size. It is important to note that the US effects reported
in literature are variable according to different factors, which
include treatment intensity, as well as other process parameters and
the specific resistance of the microbial strain. Moreover, the US effects
are highly dependent on the food matrix, making it necessary to study
each matrix separately. Therefore, the conditions applied during the
US treatment must be optimized for each product, in order to allow
the design of suitable industrial processes based on US technology.
processing time and temperature are augmented, a significant decrease in carotenoidssuch as lycopene has been observed. On the other hand, the higheststability of total phenolics and total antioxidant capacity of fruitsmoothies has been observed using the maximum amplitude level. USmay induce a negative effect on the sensorial properties of fruit juices,due to the development of off-flavors and undesirable aromas. The latestare more intense by increasing US intensity and duration of the UStreatment. On the other hand, increased treatment time and amplitudelevels cause an increase homogenization of food products due to the decreasein fat globule size. It is important to note that the US effects reportedin literature are variable according to different factors, whichinclude treatment intensity, as well as other process parameters andthe specific resistance of the microbial strain. Moreover, the US effectsare highly dependent on the food matrix, making it necessary to studyeach matrix separately. Therefore, the conditions applied during theUS treatment must be optimized for each product, in order to allowthe design of suitable industrial processes based on US technology.
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