| Abstract Detail
Ethnobotany Bahmani, Keivan [1]. Steviol glycosides from stevia; natural, safe, and zero glycemic sugar substitutes. Reducing sugar consumption is recommended by World Health Organization, and there is an increasing demand for natural sugar substitutes with lower glycemic index. Steviol glycosides (SGs) are a group of diterpenoids secondary metabolites that are used as natural, safe, and zero glycemic sugar substitutes and are up to 450 times sweeter than sucrose. Dry powder of SGs has a white yellowish color without any odor. SGs are very stable in pH 2-10 and temperatures up to 120°C and don’t interact with other compounds, such as caffeine. SGs, despite sucrose don’t help dough to rise, because they cannot be used by yeast. SGs in baked good result in a different texture, final brown color, losing volume, and creating a different mouth feel, although there are ways to resolve these differences. There are more than 60 different kinds of SGs such as stevioside (ST), rebaudioside A, steviolbioside (SB), rebaudioside B (Reb B), rebaudioside C (Reb C), rebaudioside D (Reb D), rebaudioside E (Reb E), rebaudioside M (Reb M), dulcoside A (Dul A), dulcoside B (Dul B), dulcoside C (Dul C), Rubusoside, etc. Among SGs, Reb A and ST are the most abundant and other ones present in smaller quantity. ST, Reb A, Reb D, Reb M, and Rubusoside are very sweeter than the other ones. Naturally, some plants produce SGs to enhance stability, solubility, transport, and storage of some metabolites, so those metabolites can be used for helping the host plant to adjust better to environment. Different SGs can be found in several plant species such as in leaves of rubus suavissimus S. (Rosaceae), seeds of Cucurbita maxima (Cucurbitaceae), seeds of Rubus chingii (Rosaceae), leaves of Angelica keiskei (Apiaceae), leaves of Indian mangroves (Rhizophoraceae), and leaves of Stevia phlebophylla (Asteraceae). The greatest source of SGs is leaves of stevia rebaudiana (Asteraceae) that can accumulate up to %30 different kinds of SGs. Growing stevia rebaudiana is not expensive, and they can grow easily in balconies and backyards. Stevia rebaudiana is a diploid (2n=22) small open pollinated short day perennial bushy plant, native to Amambay region in the northeast of Paraguay, and to some parts of Brazil, and Argentina, but nowadays its cultivated all over the world. Guarani people in South America were the first people that knew about stevia and its applications. Would you consider using SGs instead of sucrose?
1 - University Of Central Florida, Biological Sciences, 4110 Libra Dr, Orlando, FL, 32816, United States
Keywords:
Stevia
steviol glycosides
sugar substitutes
zero glycemic.
Presentation Type: Oral Paper
Number: ETH1007
Abstract ID:330
Candidate for Awards:None |
