Introduction A unique, dark purple berry known as the boysenberry has been noted for its complex flavor and reported nutritional attributes. According to historical accounts and botanical descriptions, the fruit is a hybrid cross between several berry species including the European raspberry, common blackberry, American dewberry, Pacific berry and loganberry [1]. Horticulturist Rudolph Boysen developed the hybrid in the 1920s in Napa, California, before moving his work to Orange County [2]. Farmer Walter Knott is credited with reviving abandoned vines and first commercially cultivating the berry in Southern California in 1932 [1]. The fruit remains a specialty crop, often processed due to its short shelf…

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