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Rapeseed (Colza) Oil: Ripened, Threshed and Pressed
Uhooep (Wikimedia Commons) · CC BY-SA 4.0
Mary

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Mary

14. Ukwakira 2026FI
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Rapeseed (Colza) Oil: Ripened, Threshed and Pressed

Colza, or rape, is a cabbage relative whose small seeds give an oil that lit the lamps of France and Belgium. Andrew Ure (1839) notes the seed yields oil only in proportion to its ripeness, so the plants are cut a little early, before the pods shed, and left to finish ripening in heaps before threshing. The pressing is the same as for linseed oil. The picture: a rapeseed (colza) field in flower.
Utangiye
A day of pressing

Amabwiriza

1

Ripen, thresh and winnow

Let the cut plants finish ripening in an airy heap, thresh out the seed, winnow off the chaff and sift it.

Ibikoresho by'iyi ntambwe:

Imbuto za kolzaImbuto za kolza3 kg

Ibikoresho bikenewe:

UrutesoUruteso
AkayungurizoAkayungurizo
2

Dry the seed

Spread the seed thinly in the air to dry before pressing (Ure).

Ibikoresho bikenewe:

Ikirago cyo kumishahoIkirago cyo kumishaho
3

Press, settle and decant

Press the dry seed in the screw press, let the oil settle and decant it clear, exactly as for linseed oil. Keep the pressed cake: Ure notes it fattens cattle.
4

Filter and bottle

Pour the settled oil through a paper filter in a funnel into clean bottles, and keep it cool and dark.

Ibikoresho bikenewe:

Igikoresho cyo gusuka gifite umunwa mutoIgikoresho cyo gusuka gifite umunwa muto
Ibiyungurura ikawa / urupapuro rwo kuyungururaIbiyungurura ikawa / urupapuro rwo kuyungurura
Icupa ry'ikirahure cy'umuhondoIcupa ry'ikirahure cy'umuhondo

Ibikoresho

1

Ibikoresho bikenewe

6

Iki gishushanyo gikora

Thumbnail
Agateganyo

Amavuta y'itara

Free

86
0
1
Thumbnail
Agateganyo

Amavuta ya kolza

Free

114
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1

Blueprint zijyanye

Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame

Cold-Pressed Linseed Oil

Cold-Pressed Linseed Oil

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Ubutabire

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