Define the roller drying (drum drying) method, Biology

Assignment Help:

Define the Roller Drying (Drum drying) Method?

One of the important techniques for drying liquid food products is the roller drier. Like spray drying, roller drying can only be used for liquid products, which can either have a low viscosity or be highly viscous to paste like. Roller dryer is also called drum drying. The metal rollers are heated from inside with condensing steam and the product dries as a thin film by contact with the cylinder surface. While spray drying is done purely by vaporisation, evaporation is the main process in roller drying since the saturated vapour pressure is equal to the atmospheric pressure. The product to be dried is spread as a thin film on to the surface of the hot drum and after one revolution is scraped off by a knife, in the form of flakes, scales or powder. A large part of the roller dried whole milk powder is destined for chocolate manufacture. Roller drying is extensively used for the manufacture of 'instant' potato products, potato flakes, and also for all liquid food products including infant foods, fruit products, eggs, milk and beverages.


Related Discussions:- Define the roller drying (drum drying) method

What is heme degradation, Bile pigments exist in both the animal and plant ...

Bile pigments exist in both the animal and plant kingdoms, and are building by breakdown of the cyclic tetrapyrrole structure of heme. In the animals this pathway is an excretory

Into which subphyla are the protochordates divided, Into which subphyla are...

Into which subphyla are the protochordates divided? What are some representatives of each protochordate subphylum? Urochordates (or tunicates) and cephalochordates are the two

Tuberculosis - patients on haart, Patients on HAART Rifamycins induce h...

Patients on HAART Rifamycins induce hepatic CYP3A4 enzymes and can accelerate metabolism of protease inhibitors and some non-nucleoside reverse transcriptase inhibitors (NNRTIs

Membrane perforation of sinus graft surgery, Membrane Perforation of sinus ...

Membrane Perforation of sinus graft surgery it is the most common complication during the sinus graft surgery resulting from the scoring of lateral access window for surgery an

Are there chloroplasts in cyanobacteria, Are there chloroplasts in cyanobac...

Are there chloroplasts in cyanobacteria? In cyanobacteria there are no chloroplasts and the chlorophyll layers are dispersed in cytosol. Which chemical element is central in

Explain prosoma in details., Explain Prosoma in details. First tagma of...

Explain Prosoma in details. First tagma of a cheliciform consisting of the first six segments of the body. Appendages on the prosoma are involved in locomotion and feeding. Pro

#Types of Blastula, Give a detailed description of stereoblastula, please ?...

Give a detailed description of stereoblastula, please ?#

Water absorption, Water Absorption Water status of a plant is determin...

Water Absorption Water status of a plant is determined by two major factors: i) water absorption and ii) water loss. We deal with water absorption in this section and water lo

Explain adverse effects of adefovir dipivoxil, Adverse Effects of Adefovir ...

Adverse Effects of Adefovir dipivoxil  Doses of adefovir used for HBV are generally well tolerated but may be associated with asthenia, headache, diarrhea and abdominal pain. H

Determine general principles of allergy management, Determine General Princ...

Determine General Principles of Allergy Management? The four general principles of allergy management include: 1.  Avoid factors that cause symptoms. 2.  Use appropriate

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd