TY - JOUR

T1 - Modeling of particle size distribution of heat assisted high-pressure treated reconstituted cow milk

T2 - Effect of high pressure, pressurization time and heat treatment temperature

AU - Sahu, Jatindra K.

AU - Mallikarjunan, P. Kumar

PY - 2012/10/1

Y1 - 2012/10/1

N2 - A study was conducted to investigate the effect of high pressure, pressurization time and heat treatment temperature on particle size distribution of fat globules in reconstituted cow milk during heat assisted high-pressure (HAHP) processing of milk. The high pressure, pressurization time and heat treatment temperature were varied between 200 and 600MPa, 0 and 25min, and 15 and 65°C, respectively. Particle size distribution of the HAHP-treated milk showed that the number of fat globules below 1×10 -6m increased as pressure and pressurization time increased. However, higher temperature had a negative effect on the particle size due to aggregation of casein micelles around the fat globule at higher temperature. Modeling of particle distribution by Rosin-Rambler-Sperling-Bennet equation was observed to be a good fit for prediction of uniformity of index n and average statistical diameter D s. The values of n ranged from 0.931 to 1.318, and D s from 1.68×10 -6 to 3.12×10 -6m. Linear regression fitting of n and D s as a function of high pressure, pressurization time and heat treatment temperature showed a good fit with relative deviation percent (R d) value of 6.02% and 8.12%, respectively.

AB - A study was conducted to investigate the effect of high pressure, pressurization time and heat treatment temperature on particle size distribution of fat globules in reconstituted cow milk during heat assisted high-pressure (HAHP) processing of milk. The high pressure, pressurization time and heat treatment temperature were varied between 200 and 600MPa, 0 and 25min, and 15 and 65°C, respectively. Particle size distribution of the HAHP-treated milk showed that the number of fat globules below 1×10 -6m increased as pressure and pressurization time increased. However, higher temperature had a negative effect on the particle size due to aggregation of casein micelles around the fat globule at higher temperature. Modeling of particle distribution by Rosin-Rambler-Sperling-Bennet equation was observed to be a good fit for prediction of uniformity of index n and average statistical diameter D s. The values of n ranged from 0.931 to 1.318, and D s from 1.68×10 -6 to 3.12×10 -6m. Linear regression fitting of n and D s as a function of high pressure, pressurization time and heat treatment temperature showed a good fit with relative deviation percent (R d) value of 6.02% and 8.12%, respectively.

KW - Average statistical diameter

KW - Degree of uniformity

KW - High-pressure processing

KW - Particle size distribution

KW - RRSB equation

UR - http://www.scopus.com/inward/record.url?scp=84861185164&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861185164&partnerID=8YFLogxK

U2 - 10.1016/j.lwt.2012.03.023

DO - 10.1016/j.lwt.2012.03.023

M3 - Article

AN - SCOPUS:84861185164

VL - 48

SP - 255

EP - 260

JO - LWT - Food Science and Technology

JF - LWT - Food Science and Technology

SN - 0023-6438

IS - 2

ER -