Juice is a liquid naturally contained in fruit or vegetable tissue. Juice is prepared by mechanically squeezing or macerating fresh fruits or vegetables without the application of heat or solvents. For example, orange juice is the liquid extract of the fruit of the orange tree. Juice may be prepared in the home from fresh fruits and vegetables using variety of hand or electric juicers. Many commercial juices are filtered to remove fiber or pulp, but high pulp fresh orange juice is a popular beverage. Juice may be marketed in concentrate form, sometimes frozen, requiring the user to add water to reconstitute the liquid back to its "original state". However, concentrates generally have a noticeably different taste than their "fresh-squeezed" counterparts. Other juices are reconstituted before packaging for retail sale. Common methods for preservation and processing of fruit juices include canning, pasteurization, freezing, evaporation and spray drying.

Contents 1 Varieties 2 Labeling 3 Health Effects 3.1 Health benefits 3.2 Possible drawbacks 4 See also 5 References

[edit] Varieties

Popular juices include, but are not limited to, apple, orange, grapefruit, pineapple, tomato, passion fruit, mango, carrot, grape, cherry, cranberry, guava, and pomegranate. It has become increasingly popular to combine a variety of fruits into single juice drinks. Popular blends include cran-apple (cranberry and apple) and apple and blackcurrant. A demonstration of this trend is that prepackaged single fruit juices have lost market share to prepackaged fruit juice combinations.^{[citation needed]} A number of new companies have had considerable success supplying prepackaged fruit juice permutations on the basis of this transition.

Juice bars have also become commonplace across most of the western world and offer similar juice blends. Juice is also commonly found in many cooking recipes from various cultures. The most popular are lime and lemon juice which help to add a slightly more sour or acidic taste to dishes.

[edit] Labeling

Most nations define a standard purity for a beverage to be considered a "fruit juice." This name is commonly reserved for beverages that are 100% pure fruit juice.

In the UK, the term fruit juice can only legally be used to describe a product which is 100% fruit juice, as required by the Fruit Juices and Fruit Nectars (England) Regulations^[1] and The Fruit Juices & Fruit Nectars (Scotland) Regulations 2003.^[2] However, the term "juice drink" can be used to describe any drink which includes juice, even if the juice content is 1% of the overall volume.^[3] Comparable rules apply in all EU member states in their respective languages.

In the USA, fruit juice can only legally be used to describe a product which is 100% fruit juice. A blend of fruit juice(s) with other ingredients, such as high-fructose corn syrup, is called a juice cocktail or juice drink.^[4] According to the Food and Drug Administration (FDA), the term "nectar" is generally accepted in the U.S. and in international trade for a diluted juice to denote a beverage that contains fruit juice or puree, water, and which may contain artificial sweeteners.^[5]

In New Zealand (and others) juice denotes a sweetened fruit extract, whereas nectar denotes a pure fruit or vegetable extract.^{[citation needed]}

However, fruit juice labels may be misleading, with juice companies actively hiding the actual content. "No added sugar" is commonly placed on labels, but the products are often made from "reconstituted concentrates." This can have the same effect as adding sugars to the beverage as the naturally occurring fructose is still unhealthy for the consumer. It is difficult for the consumer to know the contents of the concentrates^[6][7]

Juice itself is not a carbonated beverage, but some carbonated beverages, such as Orangina, are sold with actual fruit juice as an ingredient.

[edit] Health Effects

[edit] Health benefits

Juices are often consumed for their health benefits. For example, orange juice is rich in vitamin C, folic acid, potassium, is an excellent source of bioavailable antioxidant phytochemicals^[8] and significantly improves blood lipid profiles in people affected with hypercholesterolemia^[9]. Prune juice is associated with a digestive health benefit. Cranberry juice has long been known to help prevent or even treat bladder infections, and it is now known that a substance in cranberries prevents bacteria from binding to the bladder.^[10]

Fruit juice consumption overall in Europe, Australia, New Zealand and the USA has increased in recent years^[11], probably due to public perception of juices as a healthy natural source of nutrients and increased public interest in health issues. Indeed, fruit juice intake has been consistently associated with reduced risk of many cancer types^{[12][13][14][15][16][17][18][19]} and might be protective against stroke^[20].

[edit] Possible drawbacks

The perception of fruit juice as equal in health benefit to fresh fruit has been questioned, mainly because it lacks fiber and has often been highly processed. The high amounts of fructose in fruit juice when not consumed with fiber, have been suggested as a contributor to the growing diabetes epidemic in the West.^{[citation needed]} High-fructose corn syrup, an ingredient of many juice cocktails, has also been linked to the increased incidence of type II diabetes. The high consumption of juice is also linked to weight gain^[21], but fruit juice consumption in moderate amounts can help children and adults meet the daily recommendations for fruit consumption ^[22][23].

[edit] See also

• Juice vesicles

[edit] References

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