Red cabbage: Difference between revisions
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[[File:Red cabbage pabhoi.JPG|thumb|left|Red cabbage plantation on a farm]] |
[[File:Red cabbage pabhoi.JPG|thumb|left|Red cabbage plantation on a farm]] |
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[[File:Rotkohl (Brassica oleracea convar).JPG|thumb|left|A cut red cabbage]] |
[[File:Rotkohl (Brassica oleracea convar).JPG|thumb|left|A cut red cabbage]] |
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It is recommended to start red cabbage seeds indoors 4 weeks before the last frost. Sow in containers that allow for movement of water through the bottom of a cell. Popular seedling starting containers are peat pots, egg cartons, plug trays or milk cartons. Once the seedlings grow to about {{convert|2|inch|cm}} tall, and have developed their first leaves, they can be hardened off and moved outside for transplanting. Red cabbage prefers climates that remain moist and cool for most of its vegetative growth stage, so they can be placed in the ground shortly after the last frost, while the spring is still cool. The cabbage plants can be spaced about {{convert|12|-|26|inch|cm|abbr=on}} from one another. They will need watering often but are otherwise low maintenance plants. |
It is recommended to start red cabbage seeds indoors 4 weeks before the last frost. Sow in containers that allow for movement of water through the bottom of a cell. Popular seedling starting containers are peat pots, egg cartons, plug trays or milk cartons. Once the seedlings grow to about {{convert|2|inch|cm}} tall, and have developed their first leaves, they can be hardened off and moved outside for transplanting. Red cabbage prefers climates that remain moist and cool for most of its vegetative growth stage, so they can be placed in the ground shortly after the last frost, while the spring is still cool. The cabbage plants can be spaced about {{convert|12|-|26|inch|cm|abbr=on}} from one another. They will need watering often but are otherwise low maintenance plants. |
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==pH indicator== |
==pH indicator== |
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Revision as of 05:45, 14 March 2019
 | This article needs additional citations for verification. (January 2012) |
| Red cabbage | |
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| Red cabbage plant | |
| Scientific classification | |
| Kingdom: | |
| (unranked): | |
| (unranked): | |
| (unranked): | |
| Order: | |
| Family: | |
| Genus: | |
| Species: | B. oleracea
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| Cultivar Group | |
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Brassica oleracea Capitata Group | |
The red cabbage (purple-leaved varieties of Brassica oleracea Capitata Group) is a kind of cabbage, also known as purple cabbage, red kraut, or blue kraut after preparation. Its leaves are coloured dark red/purple. However, the plant changes its colour according to the pH value of the soil, due to a pigment belonging to anthocyanins[1]. In acidic soils, the leaves grow more reddish, in neutral soils they will grow more purple, while an alkaline soil will produce rather greenish-yellow coloured cabbages. This explains the fact that the same plant is known by different colours in various regions. Furthermore, the juice of red cabbage can be used as a home-made pH indicator, turning red in acid and green/yellow in basic solutions. It can be found in all Europe, throughout the Americas, in China and especially in Africa. On cooking, red cabbage will normally turn blue. To retain the red colour it is necessary to add vinegar or acidic fruit to the pot.[2]
Red cabbage needs well fertilized soil and sufficient humidity to grow. It is a seasonal plant which is seeded in spring and harvested in late fall.[3] Red cabbage is a better keeper than its "white" relatives and does not need to be converted to sauerkraut to last the winter.
Uses
| Nutritional value per 100 g (3.5 oz) | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy | 122 kJ (29 kcal) | ||||||||||||||||||||||
6.94 g | |||||||||||||||||||||||
| Sugars | 3.32 g | ||||||||||||||||||||||
| Dietary fibre | 2.6 g | ||||||||||||||||||||||
0.09 g | |||||||||||||||||||||||
1.51 g | |||||||||||||||||||||||
| |||||||||||||||||||||||
| †Percentages estimated using US recommendations for adults,[4] except for potassium, which is estimated based on expert recommendation from the National Academies.[5] | |||||||||||||||||||||||
Red cabbage is often used raw for salads and coleslaw. This vegetable can be eaten cooked. It is the traditional accompanying side dish paired with many German meals—most notably, Döner. At Christmas it can be spiced and served as an accompaniment to seasonal roast goose.
Cultivation
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It is recommended to start red cabbage seeds indoors 4 weeks before the last frost. Sow in containers that allow for movement of water through the bottom of a cell. Popular seedling starting containers are peat pots, egg cartons, plug trays or milk cartons. Once the seedlings grow to about 2 inches (5.1 cm) tall, and have developed their first leaves, they can be hardened off and moved outside for transplanting. Red cabbage prefers climates that remain moist and cool for most of its vegetative growth stage, so they can be placed in the ground shortly after the last frost, while the spring is still cool. The cabbage plants can be spaced about 12–26 in (30–66 cm) from one another. They will need watering often but are otherwise low maintenance plants.[6]
pH indicator
Red cabbage contains an anthocyanin-based dye that can be used as a pH indicator. It is red, pink, or magenta in acids, (pH < 7), purple in neutral solutions (pH ≈7), and ranges from blue to green to yellow in alkaline solutions (pH > 7).[7]
Nutrition
Red cabbage has a high content of vitamin C and vitamin K, containing 44% and 72%, respectively, of the Daily Value (DV) per 100-gram amount (right table of USDA nutrient values).[8]
Basic research on cabbage phytochemicals is ongoing to discern if certain cabbage compounds may affect health or have anti-disease effects. Such compounds include sulforaphane and other glucosinolates which may stimulate the production of detoxifying enzymes during metabolism.[9] Studies suggest that cruciferous vegetables, including cabbage, may have protective effects against colon cancer.[10] Cabbage is a source of indole-3-carbinol, a chemical under basic research for its possible properties.[11]
References
- ^ "Where does the color come from in purple cabbage?". HowStuffWorks. 2000-08-07. Retrieved 2019-03-14.
- ^ "How to Keep Red Cabbage Red When Cooking". LIVESTRONG.COM. Retrieved 2019-03-14.
- ^ "How To Grow Red Cabbages - Vegetable Gardening". www.quickcrop.ie. Retrieved 2019-03-14.
- ^ United States Food and Drug Administration (2024). "Daily Value on the Nutrition and Supplement Facts Labels". FDA. Archived from the original on 2024-03-27. Retrieved 2024-03-28.
- ^ National Academies of Sciences, Engineering, and Medicine; Health and Medicine Division; Food and Nutrition Board; Committee to Review the Dietary Reference Intakes for Sodium and Potassium (2019). Oria, Maria; Harrison, Meghan; Stallings, Virginia A. (eds.). Dietary Reference Intakes for Sodium and Potassium. The National Academies Collection: Reports funded by National Institutes of Health. Washington, DC: National Academies Press (US). ISBN 978-0-309-48834-1. PMID 30844154. Archived from the original on 2024-05-09. Retrieved 2024-06-21.
- ^ Alex (2017-12-05). "How to Grow Red Cabbage". Plant Instructions. Retrieved 2019-03-14.
- ^ "Red Cabbage Lab: Acids and Bases" (pdf)
- ^ "USDA database table for raw cabbage per 100 g". US Department of Agriculture, National Nutrient Database for Standard Reference, version SR-27. 2014. Archived from the original on 29 November 2014. Retrieved 4 December 2014.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ Dinkova-Kostova AT, Kostov RV (2012). "Glucosinolates and isothiocyanates in health and disease". Trends Mol Med. 18 (6): 337–47. doi:10.1016/j.molmed.2012.04.003. PMID 22578879.
- ^ Tse, G; Eslick, G.D. (2014). "Cruciferous vegetables and risk of colorectal neoplasms: a systematic review and meta-analysis". Nutrition and Cancer. 66 (1): 128–139. doi:10.1080/01635581.2014.852686. PMID 24341734.
- ^ Wu, Y.; Feng, X.; Jin, Y.; Wu, Z.; Hankey, W.; Paisie, C.; Li, L.; Liu, F.; Barsky, S. H.; Zhang, W.; Ganju, R.; Zou, X. (2010). "A novel mechanism of indole-3-carbinol effects on breast carcinogenesis involves induction of Cdc25A degradation". Cancer Prevention Research. 3 (7): 818–828. doi:10.1158/1940-6207.CAPR-09-0213. PMC 4214069. PMID 20587702.
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External links
