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Dehydration Synthesis

Dehydration Synthesis

Overview
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...

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Related Experiment Video

Updated: Apr 3, 2026

Evaluating the Effect of Environmental Chemicals on Honey Bee Development from the Individual to Colony Level

Evaluating the Effect of Environmental Chemicals on Honey Bee Development from the Individual to Colony Level

Published on: April 1, 2017

A small scale honey dehydrator.

R S Gill¹, V S Hans¹, Sukhmeet Singh²

¹Department of Mechanical Engineering, Punjab Agricultural University, Ludhiana, 141004 India.

Journal of Food Science and Technology

|September 24, 2015

Summary

This summary is machine-generated.

A novel small-scale honey dehydrator effectively reduces honey

Keywords:

Dehydration rate Drying Energy consumption Honey Moisture content

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Collection and Identification of Pollen from Honey Bee Colonies

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Area of Science:

Agricultural Engineering
Food Science and Technology

Background:

Honey's high moisture content (>20%) can lead to fermentation and spoilage.
Existing dehydration methods may be inefficient or costly for small-scale producers.

Purpose of the Study:

To design, develop, and test a small-scale honey dehydrator.
To achieve honey moisture content below 17%.

Main Methods:

Honey dehydration using drying air at ambient, 30, and 40°C.
Water temperatures of 35, 40, and 45°C were used for heating honey.
A sieve created honey streams to increase surface area for efficient moisture removal.

Main Results:

Maximum drying rate of 197.0 g/h-m² achieved with 40°C air and 45°C water.
Minimum drying rate of 74.8 g/h-m² observed with ambient air and 35°C water.
Energy cost for moisture reduction from 25.2% to 16.4% ranged from $0.10 to $0.28 per kg.

Conclusions:

The developed dehydrator successfully reduces honey moisture content.
Optimized air and water temperatures significantly enhance dehydration rates.
The process offers a cost-effective solution for small-scale honey producers.