Vegetable juice
Vegetable juice is a
Home-made juice
Making vegetable juice at home is an alternative to buying commercial juices, and may augment diets low in vegetables and fruits. The juicer separates juice from pulp fibers. Masticating juicers employ a slow-geared grinding mechanism. A cheaper and faster alternative uses centrifugal force to achieve separation. The slower speed of the masticating process is held to protect the vegetables from oxidation and heat (from friction), reducing nutrient breakdown. Advocates of masticating juicers often cite the preservation of enzymes, though these are rarely specified and the claims are unsubstantiated by a body of academic support. Juicing the fine leaves of wheatgrass usually requires a masticating process.
Varieties
Commercial vegetable juices are commonly made from varying combinations of
may be added by some for medicinal purposes.Other common juices include
In Asian cultures, primarily
Kale juice marketed as Aojiru in Japan has become well known for its purported health benefits and bitter taste.
Japan also markets several kinds of vegetable juices which, unlike Western juices, usually depend on carrots and fruits instead of large amounts of tomato juice for their flavor.
Nutrition
In general, vegetable juices are recommended as supplements to whole vegetables, rather than as a replacement. However, the actual nutritional value of juices versus whole vegetables is still contested.
However, the British Nutrition Foundation holds that although vegetable juice counts as a serving, it can only count as one serving, regardless of the amount of juice drunk.[5] Additionally, A 2007 Japanese study showed that although Japanese commercial juices had nutritional benefits, they were insufficient as a primary mode of vegetable consumption.[6]
Many popular vegetable juices, particularly ones with high tomato content, are high in sodium, and therefore consumption of them for health must be carefully considered. Some vegetables such as beets also contain large amounts of sugar, so care must be taken when adding these to juices.
Consumption of certain vegetable juices can also contribute substantially to oxalate intake; people who form calcium oxalate stones may be advised to limit consumption of vegetable juices.[7] Cases of oxalate nephropathy associated with oxalate-rich juice intake have also been documented in susceptible individuals.[8]
Although the actual nutritional benefits of vegetable juice are contested, a 2008
See also
- Juicing
- List of juices
- Raw veganism
References
- ISBN 978-1-60327-430-2.
- ^ 5 A Day Fruit and Vegetable Quick Tips
- S2CID 7319032.
- PMID 16945610.
- DOC
- ^ "Consumer Test: Vegetable Drinks (消費生活関連テスト 野菜系飲料)" (PDF). Archived from the original (PDF) on 2010-10-11. Retrieved 2008-11-04. (238 KB)
- .
- PMID 29203127.
- .
External links
- Media related to Vegetable juices at Wikimedia Commons