Jamba Juice (Photo credit: Wikipedia)

A California resident has filed a putative class action in federal court against the Jamba Juice Co., alleging that it falsely advertises its fruit smoothie kits as “All Natural,” when they actually contain “unnaturally processed, synthetic and/or non-natural ingredients,” such as ascorbic acid, citric acid, xanthan gum, and steviol. 


The steviol glycosides are responsible for the sweet taste of the leaves of the stevia plant (Stevia rebaudiana Bertoni). These compounds range in sweetness from 40 to 300 times sweeter than sucrose. They are heat-stable, pH-stable, and do not ferment. They also do not induce a glycemic response when ingested, making them attractive as natural sweeteners to diabetics and others on carbohydrate-controlled diets.

http://en.wikipedia.org/wiki/Steviol_glycoside