Prune juice

In the United States, bottled or canned prune juice contains "not less than 18.5% by the weight of water-soluble solids extracted from dried plums".[5] It is considered to be a high-fiber food.[6]

Prune juice is often produced using hot extraction methods, whereby the prunes are cooked in hot water, becoming a liquid extract, which is then processed into juice.[1] The process of heating and extraction may occur several times with the same batch of prunes, with the collective extracts from each processing then mixed together to create the final product.[1] Prune juice is a mass-produced product.[8]

Prune juice is also produced as a concentrate, whereby low temperature water is used to create a liquid extract.[5] The concentrate has a high sugar content, and is used by food processors to enhance the flavor of and sweeten products, as a humectant to retain moisture in cookies and cakes, and as an ingredient in cereal bars to bind the ingredients.[9]

Prunes may provide a natural laxative effect, and prune juice may serve as a natural laxative for cases of mild constipation.[10] In 1990, the U.S. Food and Drug Administration stated that "the common prune was not an effective laxative".[5]

Prune juice concentrate, prune extracts and plum extracts are sometimes used as an additive in tobacco products to enhance flavor.[9]

In central Pennsylvania during the early days of prohibition in the United States, some bootleggers sold a dangerous concoction facetiously referred to as whiskey, which was also called "toilet water", that consisted of various colognes, perfumes and prune juice mixed together.[12]

In the Star Trek episode "Yesterday's Enterprise", the Klingon character Worf is introduced to prune juice by Guinan.[13] He declares that it is a "warrior's drink" and begins to drink it regularly in subsequent episodes, even carrying the habit over to Star Trek: Deep Space Nine.[14]

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  A prune juice label from 1870: "French Prune Juice – For giving age to and improving liquors"

• Chocolate-covered prune
• Juicing
• List of juices
• List of plum dishes
• List of additives in cigarettes
• Suanmeitang – (sour prune drink), a traditional Chinese beverage made from smoked plums, rock sugar, and other ingredients

• Donovan, Jennifer L.; Meyer, Anne S.; Waterhouse, Andrew L. (1998). "Phenolic Composition and Antioxidant Activity of Prunes and Prune Juice (Prunus domestica)". Journal of Agricultural and Food Chemistry. American Chemical Society (ACS). 46 (4): 1247–1252. doi:10.1021/jf970831x. ISSN 0021-8561.
• Sanders, S.W. (1991). "Using prune juice concentrate in whole wheat bread and other bakery products". Cereal Foods World (USA). ISSN 0146-6283. Retrieved March 15, 2019.