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==Übersicht==
[[Howtopedia | Übersicht übernommener Howtopedia Artikel]], [[Wie man einen effizienten Holzofen baut | Zum Übersetzten Artikel]] , [[How to Build an Efficient Wood Oven | zum originale Artikel]]

=Drying of Chillies - Technical Brief=

==Short Description==
*'''Problem:''' Drying chillies as a small business
*'''Information Type:''' Application /
*'''Difficulty:''' Difficult
*'''How Many people?''' Up to 5 people

==Harvesting==

<div class="booktext">

By definition 'processing' does not involve harvesting. However, one cannot produce a good quality product from badly harvested materials. Correct harvesting techniques could be said to be the most important factor in the production of a high quality final product.

For processing, chillies should not be picked until it starts going red.

</div>

==Cleaning==

<div class="booktext">

The crop should be cleaned before processing. The first stage is to remove dust and dirt using a winnowing basket. This can be made locally from bamboo, palm or other leaves. Someone used to this work can remove the dust, dirt and stones quickly and efficiently (eg they could clean 100kg of chillies in an eight hour day). Small machines are available for cleaning but they are rarely cost effective.

After winnowing the crop needs to be washed in water, all that is needed are two or three 15 litre buckets. For larger quantities a 1m³ sink/basin with a plughole needs to be constructed. This can be made out of concrete. However, the water must be changed regularly to prevent recontamination by dirty water. Only potable water should be used.

</div>

==Drying==

<div class="booktext">

This is by far the most important section in the process. The inability to adequately dry the produce will, at the very least slow down the whole process and possibly lead to mould growth or discolouration. Any produce with even a trace of mould cannot be used for processing. The sale value of mouldy chilli can be less than 50% the normal value. In extreme cases the whole crop can be lost.

<center>

[[Image:Chillies01.gif]]<br /> Figure 1: A cabinet solar dryer

</center>

'''Drying during the dry season'''

During the dry season, sun drying is usually adequate to dry the produce. The simplest and cheapest method is to lay the produce on mats in the sun. However, there are problems associated with this method. Dust and dirt are blown onto the crop and unexpected rain storms can re-wet the crop.

<center>

[[Image:Chillies02.gif]]<br /> Figure 2: The 'Exell Solar Dryer'

</center>

A solar dryer avoids these problems. The simplest type is the cabinet solar dryer, see Figure 1, which can be constructed out of locally available materials (eg bamboo, coir fibre or nylon weave).

For larger units (over 30kg/day an 'Exell Solar Dryer' could be used, see Figure 2. However, the construction costs are greater and a full financial evaluation should therefore be made to ensure that a higher income from better quality spices can justify the additional expense.

'''Drying during the wet season'''

During the wet season or times of high humidity, which often coincides with the harvest of the spices, a solar dryer or sun drying can not be used effectively.

An artificial dryer, which uses a cheap energy source is necessary. This may be a wood or husk burning dryer or a combined wood burning and solar dryer. Figures 3-6 show a combined wood burning and solar drier which is based on the McDowell Dryer and has been used in Sri Lanka.

<center>

[[Image:Chillies03.gif]]<br /> Figure 3 A combined wood burning and solar drier

</center><center>

[[Image:Chillies04.gif]]<br /> Figure 4

</center><center>

[[Image:Chillies05.gif]]<br /> Figure 5

</center><center>

[[Image:Chillies06.gif]]<br /> Figure 6

</center>

'''Over drying'''

Care needs to be taken to prevent over drying of the crops. A drier operator will soon learn how to assess the moisture content of the crops by hand. The final moisture content should be 10% wet basis.

</div>

==Grading==

<div class="booktext">

In some cases the crop needs to be graded, eg high quality packaged products. Chillie is graded by colour and size this is done by hand. The brighter the colour red the better.

</div>

==Grinding==

<div class="booktext">

Grinding may also add value but must be done carefully as there are difficulties. A whole, intact product can be easily assessed for quality whereas a ground product is more difficult. There is a market resistance to ground produce due to fear of adulteration. This can only be overcome by producing a consistently high quality product and gaining the confidence of customers. There are basically two types of grinders - manual grinders and mechanical grinders. A grinding mill has to be placed in a separate and well-ventilated room because of dust.

</div>

==Manual grinding mills==

<div class="booktext">

There are many manual grinders that could be used to grind chillie (see equipment suppliers at [[How to Process Spice]]).

An experienced operator can grind about 20kg in an eight hour day. However, this is hard and boring work. A treadle or bicycle could easily be attached to the grinder which will make the work easier. With this system one person could grind about 30kg in one day.

Work needs to be done to find out the degree of fineness the consumer wants. The grinding mills then need to be set so that they produce the desired ground product.

For small-scale production, (up to 100kg/day) a series of these grinders is all that is needed. For larger scale production units, a mechanical grinder would be required.

</div>

==Mechanical grinding mills==

<div class="booktext">

Horizontal plate, vertical plate or hammer mills are suitable for grinding chillies. A grinding mill has to be placed in a separate and well-ventilated room because of the dust.

As above the grinding mill needs to be adjusted so that it grinds the chillies to the desired fineness.

</div>

==Packaging==

<div class="booktext">

'''Packaging material'''

Packaging of these products, especially if they are ground requires polypropylene. Polythene cannot be used as the flavour components diffuse through it.

'''Simple sealing'''

The bags can be sealed simply by folding the polypropylene over a hacksaw blade and drawing it slowly over the flame of a candle. However, this is extremely uncomfortable as the hacksaw blade heats up and burns the hands of the operator. However, this is a very common technique.

'''Sealing machines'''

A sealing machine will speed this operation up considerably and produce a much tidier finish (which is very important).

The cheapest sealing machines have no timing mechanism to show when the bag is sealed and they have a tendency to overheat.

Sealing machines with timers are desirable. The machines come in many sizes. For most work an 8 inch (20cm) sealer is sufficient. Eye catching labels should be sealed above the product in a separate compartment and holed so the package can be hung-up in the shop.

</div>

==Storage==

<div class="booktext">

A well designed and secure store is essential.

The optimal conditions for a store are: low temperature, low humidity and free from pests. The store should be located in a shaded, dry place. To keep humidity as low as possible only fully dried products should be stored in it. The produce should be checked regularly and if it has absorbed too much moisture it should be dried again.

To prevent pests entering, the roof should be completely sealed. Mosquito netting should be placed over the windows and doors should be close fitting.

</div>

==References and further reading==

<div class="booktext">

''Small-scale spice processing'', Practical Action Technical Brief

''Drying technologies'', Practical Action Technical Brief

''Drying of foods'' Practical Action Technical Brief

''Solar drying'' Practical Action Technical Brief
==Related Articles==
*[[How to Preserve Food with Small Scale Drying Technologies]]
*[[How to Preserve Food by Drying]]
*[[How to Use Sun Power]]
*[[How to Make Chocolate]]
*[[How to Preserve Tomato]]
*[[How to Preserve Food with a Solar Dryer]]
*[[How to Process Spice]]
*[[How to Process Turmeric]]
*[[How to Build a Tray Dryer]]
*[[The Anagi Tray Dryer]]
*[[How to Dry Chillies]]
*[[How to Process Pepper]]

==Equipment suppliers==

Note: This is a selective list of suppliers and does not imply ITDG endorsement''.''

===Drying Equipment===

Bombay Industrial Engineers 430 Hind<br /> Rajasthan Centre<br /> D.S. Phalke Road<br /> Dadar (C.Rly.)<br /> Mumbai - 400 014<br /> Maharashtra<br /> India<br /> Tel: +91 (0)22 2411 39 99 / 2411 42 75<br /> Tray, tunnel, drum and fluid bed driers are available.

Udaya Industries Uda Aludeniya<br /> Weligalla<br /> Gampola<br /> Sri Lanka<br /> Tel: +94 8 388586<br /> Fax: +94 8 388909<br /> Multi purpose dryers available for a wide range of food and agricultural products including; Cereals, Fruit, Herbs, spices, Vegetables.

Ashoka Industries Kirama<br /> Walgammulla<br /> Sri Lanka<br /> Tel: +94 71 764725<br /> The dryer uses paddy husk or saw dust as fuel. Capacity: 15-75 kg/10 hours

<div align="left">

{| border="1" cellpadding="5"
|- valign="top"
| valign="top" |
'''Sealing machines'''Doboy Limited<br /> 2 Blaydon Road<br /> Sandy<br /> SG19 1RB<br /> United Kingdom<br /> Tel: + 44 (0)1767 82911<br /> Fax: +44 (0)1767 291763Hulme Martin Limited<br /> 6 Brownlow Mews<br /> Guilford Street<br /> London<br /> WC1N 2LD<br /> Tel: +44 (0)20 7242 5448<br /> Fax: +44 (0)20 7242 2044Orbit Equipments PVT. Ltd.<br /> Block No.1<br /> Venkat Reddy Complex<br /> Tarbund X Roads<br /> Secunderabad - 560 009<br /> India<br /> Telephone: +91 (0)40 2817296<br /> Fax: +91 (0)40 2813877<br /> Packaging machines such as heat sealers, carton-sealing machines, stretch wrapping machines, case packers and palletisers.
|}

</div>

Bay Hiap Thai Company Ltd Wernakorn<br /> Kasem, Bangkok<br /> Wernakorn Kasem,<br /> Bangkok<br /> Thailand<br /> Tel: +66 2 2212432 / 2213670<br /> Dried Chilli Roasting Machine 50 kg/hour<br /> Gas powered
==Contact==
'''Practical Action, The Schumacher Centre for Technology & Development'''<br />'''Bourton Hall, Bourton-on-Dunsmore, Rugby, Warwickshire CV23 9QZ, UK'''<br />'''Tel: +44 (0)1926 634400 Fax: +44 (0)1926 634401 E-mail: [mailto:Infoserv@practicalaction.org.uk Infoserv@practicalaction.org.uk] Web: http://www.practicalaction.org'''<br />'''Intermediate Technology Development Group Ltd Patron HRH -The Prlnce of Wales. KG, KT, GCB'''<br />'''Company Rag. No 871954, England Rag. Charity No 247257 VAT No 241 5154 92'''<br />

'''This Howtopedia entry was derived from the Practical Action Technical Brief ''Drying of Chillies''. <br />To look at the original document follow this link:
http://www.practicalaction.org/?id=technical_briefs_food_processing

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How to Dry Chillies - Versionsgeschichte

Andre Pohle: /* Deeplink: */

Andre Pohle am 4. Februar 2026 um 08:12 Uhr

Andre Pohle am 4. Juni 2021 um 12:09 Uhr

Andre Pohle: Schützte „How to Dry Chillies“ ([Bearbeiten=Nur automatisch bestätigten Benutzern erlauben] (unbeschränkt) [Verschieben=Nur automatisch bestätigten Benutzern erlauben] (unbeschränkt))

Andre Pohle: Die Seite wurde neu angelegt: „==Übersicht== Übersicht übernommener Howtopedia Artikel, Zum Übersetzten Artikel , How to…“