modeling apparent density of potato strips pretreated with ultrasound and drying during deep-fat frying

Authors

عنایت الله نقوی

دانشجوی دکتری گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه تبریز جلال دهقان نیا

دانشیار گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه تبریز بابک قنبرزاده

استاد گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه تبریز

abstract

the aim of this study was to investigate the effect of ultrasound and drying pretreatments on apparent density as well as modeling apparent density during deep-fat frying of potato slices. ultrasound pretreatment was performed at 28 and 40 khz for 15 min and drying pretreatment were conducted at 80°c for 8 and 15 min. then, the frying process was done at 150, 170 and 190°c for 60, 120, 180 and 240 seconds. in order to model apparent density, experimental data were fitted with six empirical models proposed in this study. the results showed that apparent density of various samples decreased during deep-fat frying. in samples pretreated with ultrasound (28 and 40 khz), the process time for 180 or 240 s, significantly reduced the apparent density compared to control samples. however, in samples pretreated with pre-drying (8 and 15 min), the decrease in apparent density was not statistically significant in comparison with control samples for the same process time. furthermore, by increasing the temperature from 150 to 190°c, the reduction in apparent density increased. in addition, applied models were well fitted to experimental data with high r2 and low rmse. also, through multiple regression analysis, models with high r2 were proposed that are applicable to the different conditions in terms of time and temperature of the deep-fat frying process.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

modeling oil uptake of potato strips pretreated with ultrasound, microwave and osmotic dehydration during deep-fat frying process

the objective of this study was to evaluate the effect of process conditions and different pretreatments including ultrasound, microwave and osmotic dehydration on mass transfer and oil uptake during deep fat frying of potato slices. ultrasound pretreatment was performed at frequency of 40 khz for 10 and 30 minutes, microwave pretreatment was conducted at 5 w/g power and osmotic dehydration pre...

full text

modeling apparent density during drying of grapes pretreated with ultrasound and carboxymethyl cellulose

drying foodstuffs can have negative effects on quantitative and qualitative characteristics of the products, including porosity and bulk density. therefore, novel technologies can be used to improve these characteristics. in this study, apparent density changes during drying grapes pretreated with ultrasound for 10, 20 and 30 minutes, and carboxymethyl cellulose (cmc) at three concentrations of...

full text

My Resources

Save resource for easier access later


Journal title:
علوم و صنایع غذایی ایران

جلد ۱۴، شماره ۶۲، صفحات ۱۵-۱

Keywords
[ ' t h e a i m o f t h i s s t u d y w a s t o i n v e s t i g a t e t h e e f f e c t o f u l t r a s o u n d a n d d r y i n g p r e t r e a t m e n t s o n a p p a r e n t d e n s i t y a s w e l l a s m o d e l i n g a p p a r e n t d e n s i t y d u r i n g d e e p ' , ' f a t f r y i n g o f p o t a t o s l i c e s . u l t r a s o u n d p r e t r e a t m e n t w a s p e r f o r m e d a t 2 8 a n d 4 0 k h z f o r 1 5 m i n a n d d r y i n g p r e t r e a t m e n t w e r e c o n d u c t e d a t 8 0 ° c f o r 8 a n d 1 5 m i n . t h e n ' , ' t h e f r y i n g p r o c e s s w a s d o n e a t 1 5 0 ' , ' 1 7 0 a n d 1 9 0 ° c f o r 6 0 ' , 1 2 0 , ' 1 8 0 a n d 2 4 0 s e c o n d s . i n o r d e r t o m o d e l a p p a r e n t d e n s i t y ' , ' e x p e r i m e n t a l d a t a w e r e f i t t e d w i t h s i x e m p i r i c a l m o d e l s p r o p o s e d i n t h i s s t u d y . t h e r e s u l t s s h o w e d t h a t a p p a r e n t d e n s i t y o f v a r i o u s s a m p l e s d e c r e a s e d d u r i n g d e e p ' , ' f a t f r y i n g . i n s a m p l e s p r e t r e a t e d w i t h u l t r a s o u n d ( 2 8 a n d 4 0 k h z ) ' , ' t h e p r o c e s s t i m e f o r 1 8 0 o r 2 4 0 s ' , ' s i g n i f i c a n t l y r e d u c e d t h e a p p a r e n t d e n s i t y c o m p a r e d t o c o n t r o l s a m p l e s . h o w e v e r ' , ' i n s a m p l e s p r e t r e a t e d w i t h p r e ' , ' d r y i n g ( 8 a n d 1 5 m i n ) ' , ' t h e d e c r e a s e i n a p p a r e n t d e n s i t y w a s n o t s t a t i s t i c a l l y s i g n i f i c a n t i n c o m p a r i s o n w i t h c o n t r o l s a m p l e s f o r t h e s a m e p r o c e s s t i m e . f u r t h e r m o r e ' , ' b y i n c r e a s i n g t h e t e m p e r a t u r e f r o m 1 5 0 t o 1 9 0 ° c ' , ' t h e r e d u c t i o n i n a p p a r e n t d e n s i t y i n c r e a s e d . i n a d d i t i o n ' , ' a p p l i e d m o d e l s w e r e w e l l f i t t e d t o e x p e r i m e n t a l d a t a w i t h h i g h r 2 a n d l o w r m s e . a l s o ' , ' t h r o u g h m u l t i p l e r e g r e s s i o n a n a l y s i s ' , ' m o d e l s w i t h h i g h r 2 w e r e p r o p o s e d t h a t a r e a p p l i c a b l e t o t h e d i f f e r e n t c o n d i t i o n s i n t e r m s o f t i m e a n d t e m p e r a t u r e o f t h e d e e p ' , ' f a t f r y i n g p r o c e s s . ' ]

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023