Practical Answers

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  Chutneys and Sauces

  The preparation of chutneys and sauces is a well known preservation method for fruit and vegetables using sugar and acetic acid or vinegar heated together.

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  Dairy Processing

  Dairy products can be split into groups accodring to their preservation status - milk is at high risk of turning sour after only a few days if untreated. However, preservation techniques extend its shelf life.

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  Lime: An Introduction

  Lime has a long tradition of use in construction, agriculture, water and waste treatment.

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  Oregano Cultivation

  Oregano has a very high tolerance in terms of altitude and temperature. It is suitable in any soil that is not saline.

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  Drying of Foods

  The drying of food results in longer preservation and ease of transport (lighter). This technical brief describes some of the requirements for food drying to retain maximum nutrients and aesthetics, and summarizes information on the various drying equipment.

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  Solar Photovoltaic Energy

  This Technical Brief looks at the background of solar photovoltaic (PV) energy (in which sunlight is directly converted into electricity), the design of PV cell, modules and arrays, and configuration of PV systems.

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  Mushroom Growing

  Developing commercial cultivation of mushrooms is growing throughout Africa. This brief focuses on this practice in Zimbabwe.

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  Solar Drying

  Drying using sunshine - a brief description of the basic principles behind it and how to determine the rate of drying.

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  Ginger Processing

  Ginger is valued for the dried ginger spice and preserved, crystallised ginger.

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  Fruit Preserves - Jams, Jellies and Marmalades

  An introduction to small-scale jams, jellies and marmalades making, Known collectively as preserves.