Optimisation of a process for shelf‐stable dietetic Chhana kheer and changes in physicochemical properties during storage

In the production of shelf‐stable dietetic Chhana kheer, optimised levels of Chhana and artificial sweeteners were examined using a stationary retort. The product was characterised by short lag period for heating (j_h) (0.78–1.03), small heating rate index (f_h) (7.69–17.00 min) and short lag factor for cooling (j_c) (0.76–1.06), implying convective heating regime. The total process time B was 19.13–32.98 min for corresponding process lethality values (F_o) of 4.56–25.50 min. Based on optimisation, processing of the dietetic Chhana kheer at 121.40 °C for 20 min was found to be the optimum. Optimised product was stable up to 90 days at 37 °C.     

Selection of dietary fibres for sucrose replacement in functional Chhana‐murki (Indian Cottage cheese‐based dessert) and their effect on sensory,physical and instrumental texture parameters

With a wide range of beneficial effects on human health, various dietary fibres such as microcrystalline cellulose (MCC), inulin, oat fibre and wheat fibre were screened based on their bulking ability in the functional Chhana‐murki (FCM) with respect to sensory and physical properties. Sensory scores were maximum for MCC at 7.5% having optimum moisture content and water activity and minimum hardness, whereas oat and wheat fibres increased the hardness of the product while decreasing the moisture content and water activity thus lowering the sensory scores. Further, replacement of MCC with inulin in 1:1 ratio improved the product characteristics.     

Performance of an impact type device for continuous production of paneer

Chhana, a heat-acid coagulated product of milk, is pressed to make paneer. Like Tofu, paneer is extensively used for the preparation of a large number of culinary dishes. For the pressing, chhana was kept in cages made from a special type of screen and the cages were subjected to impact forces. Total amount of energy imparted to chhana during impacts was correlated with reduction of moisture, increase in hardness of pressed chhana and the solid lost through whey from pressed chhana. Rate of change of moisture content, hardness and solid loss with the energy imparted was found to follow first order reaction kinetics. Prototype of an impact type device was made from which compressed blocks of chhana could be taken out at regular intervals. Validity of first order reaction kinetics model was confirmed with the prototype device. Relative deviation percentage between the model and experimental values obtained from the prototype was found to lie between 3.7% and 4.1%.     

Technology for the Manufacture of Diabetic Rosogolla

Diabetic Rosogolla was manufactured by using low-fat cow milk. Six different combinations viz. type of chhana and two different concentrations (40° and 50° Brix) of cooking medium. All of the experimental samples and control were analyzed for physico-chemical, textural, and sensory properties. A 40° Brix concentration of cooking medium was preferred to give a highly acceptable Diabetic Rosogolla. The average composition of Diabetic Rosogolla is moisture—52.20%, fat—4.46%, protein—12.78%, sorbitol—29.66%, and ash—0.89%. Similarly, the rheological properties were hardness—7.85 N, cohesiveness—0.54, springiness—6.06 mm, gumminess—3.8 N, chewiness—26.07 Nmm, fracture force—4.1 N, adhesiveness—0.0272 Nmm, and stiffness—2.17 N/mm. This protocol can be adopted at commercial level and be used to serve the customers who desire fewer calories but cannot resist having the sweets after their meal.