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LLarrea tridentata, Laurus nobilis, Lagerstroemia speciosa,Lactuca sativa , Lupinus , Lavandula multifida, Lygos, Lycium shawii, Lavandula stoechas .

Lagerstroemia speciosa

Taxonomy: Kingdom : Plantae

Division : Magnoliophyta

Class : Magnoliopsida

Order : Myrtales

Family : Lythraceae

Genus : Lagerstremia

Chemical Constituents:

Corosolic acid (2α-hydroxyursoloic acid), ellagitannins

Rich in tannin: fruit, 14 to 17 %; leaves 13 %; bark, 10%,

Glucoside, glucokinin,3-beta,23-dihydroxy-1-oxo-olean-12-en-28-oic acid; Ellagitannins lagerstroemin, flosin B and reginin A.Lagertannins, beta-sitosterol, stigmasterol, campesterol, Lageracetal (1,1-Dibutoxybutane), 1-pentanol, ellagic acid, 16 amino acids, pyrogallol tannins, lipids valoneaic acid (VAD), dilactone.High concentrations of dietary fiber, minerals (zinc and magnesium)

Part used : Bark

Refrence:

Chemical constituents:

Corrosolic acid is being studied for its glucose lowering effect http://www.stuartxchange.org/Banaba.html

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2176148

http://www.bpi.da.gov.ph/Publications/mp/pdf/b/banaba.pdf

Effect of corosolic acid on the hydrolysis of disaccharides.

http://www.jstage.jst.go.jp/article/jnsv/54/3/266/_pdf

Antidiabetes and Anti-obesity Activity of Lagerstroemia speciosa.

www.ncbi.nlm.nih.gov/pubmed/18227906

Effect of corosolic acid on gluconeogenesis in rat liver.

www.ncbi.nlm.nih.gov/pubmed/18177973

alpha-Amylase inhibitory activity of some Malaysian plants used to treat diabetes; with particular reference to Phyllanthus amarus.

www.ncbi.nlm.nih.gov/pubmed/16678367

Effect of corosolic acid on postchallenge plasma glucose levels.

www.ncbi.nlm.nih.gov/pubmed/16549220

Tannic acid stimulates glucose transport and inhibits adipocyte differentiation in 3T3-L1 cells.

www.ncbi.nlm.nih.gov/pubmed/15671208

Isolation and quantitative analysis of the alpha-amylase inhibitor in Lagerstroemia speciosa (L.) Pers. (Banaba)

www.ncbi.nlm.nih.gov/pubmed/12875243

Antidiabetic activity of a standardized extract (Glucosol) from Lagerstroemia speciosa leaves in Type II diabetics. A dose-dependence study.

www.ncbi.nlm.nih.gov/pubmed/12787964

Ellagitannins from Lagerstroemia speciosa as activators of glucose transport in fat cells.

www.ncbi.nlm.nih.gov/pubmed/11859474

Antiobesity activity of extracts from Lagerstroemia speciosa L. leaves on female KK-Ay mice.

www.ncbi.nlm.nih.gov/pubmed/10737232

Anti-hyperglycemic activity:

Hypoglycemic effect of extracts from Lagerstroemia speciosa L. leaves in genetically diabetic KK-AY mice.

www.ncbi.nlm.nih.gov/pubmed/9063966

Hypoglycemic Activity of Irradiated Banaba (Lagerstroemia speciosa Linn.) Leaves

http://www.insinet.net/jasr/95-98.pdf