Explain the importance of determining the proximate composition of food products. What are the key components measured in proximate roximate analysis?

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Explain the importance of determining the proximate composition of food products. What are the key components measured in proximate roximate analysis?

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1 Describe the principles and methods of food preservation.

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2 Explain thermophysical properties of foods with examples. A wet food product contain 70% water. After drying, it is found that 80% of original water is removed. Determine (i) mass of water removed per kg of wet food and (ii) composition of dried food.

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3 Define and discuss the rheological properties of common food products like sauces, dough and emulsions in context of food engineering. How do these properties affect to choose processing methods?

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4 Describe the working principle with mechanism of a vapour compression refrigeration cycle with a flow diagram. It is wished to freeze 15 tonnes of fish per day from an initial temperature of 10°C using a stream of cold air. Estimate the maximum capacity of the refrigeration plant required, if it is assumed that the maximum rate of heat extraction from the product is twice of the average rate. If the heat transfer co-efficient from the air to the evaporator coils is 22 Jms°C, calculate the surface area of the evaporator coil required if the LMTD drop across the coil is 12°C and specific heats of fish are 3-18 and 1-67 KJkg¹°C above and below freezing, respectively.

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5 Explain the principles and factors of drying process. "Drying involves both heat and mass transfer processes simultaneously"-Justify the statement.

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6 What are the general principles of food packaging? Discuss the different types of packaging materials commonly used in food industry and their specific properties and applications.

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Explain the importance of determining the proximate composition of food products. What are the key components measured in proximate roximate analysis?