A novel boswellia low polar gum resin extract and its synergistic compositions
A synergistic and extractive technology, applied in drug combination, active ingredients of anhydride/acid/halide, drug delivery, etc., can solve problems that do not involve frankincense low-polarity gum resin extract
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example 1
[0166] Preparation of Boswellia serrata Low Polar Gum Resin Extract (BsLPRE):
[0167] Boswellia serrata gum resin (100 g) was dispersed in 600 ml of methyl isobutyl ketone (MIBK) solvent and stirred at room temperature for 60 minutes. Insoluble gum particles were isolated by filtration. The MIBK solution was repeatedly extracted with 2% potassium hydroxide solution (3 x 200 ml) to remove acidic compounds. The MIBK layer was then washed successively with water (400 ml) and brine (200 ml). The MIBK layer was concentrated in vacuo at 60-70°C and the volatile components were removed from the oily residue under vacuum at 75-85°C to give BsLPRE as a viscous oil (12 g).
[0168] Alternatively, the gum resin (250 g) collected from Boswellia serrata was extracted with methanol (300 ml x 3) and the combined methanol extracts were concentrated. The residue (50g) was dissolved in ethyl acetate (400ml) and extracted three times with 1N potassium hydroxide (3x100ml). The organic laye...
example 2
[0180] Preparation of Boswellia karsiba Low Polarity Gum Resin Extract (BcLPRE):
[0181] Mastic gum resin (100 g) was dispersed in 600 ml of methyl isobutyl ketone (MIBK) solvent and stirred at room temperature for 60 min. Insoluble gum particles were isolated by filtration. The MIBK solution was repeatedly extracted with 2% potassium hydroxide solution (3 x 200 ml) to remove acidic compounds. The MIBK layer was then washed successively with water (400 ml) and brine (200 ml). The MIBK layer was concentrated in vacuo at 60-70°C and the volatile components were removed from the oily residue under vacuum at 75-85°C to give BcLPRE as a viscous oil (9.5 g).
[0182] Alternatively, the gum resin (250 g) collected from Boswellia carinii was extracted with methanol (300 ml x 3) and the combined methanol extracts were concentrated. The residue (50g) was dissolved in ethyl acetate (400ml) and extracted three times with 1N potassium hydroxide (3x100ml). The organic layer was washe...
example 3
[0184] Boswellia serrata extract standardized to 50-100% total boswellic acids by titration or 30- Boswellia serrata extract with 100% total boswellic acids: Boswellia serrata extracts standardized to 85% or 65% total boswellic acids by titration analysis are commercially available. Or these extracts can be prepared using a known method. For example, the gum resin of Boswellia serrata is extracted using a water-insoluble organic solvent, followed by phase separation using an aqueous alkaline solution to selectively extract acidic compounds from the organic solvent extract. Finally the alkaline solution was acidified to precipitate the boswellic acids, and the residue was then filtered and vacuum dried to solidify into a yellow Boswellia serrata extract standardized to 85% boswellic acids (BSE85%). Boswellia serrata extract normalized to a selective concentration of total boswellic acids between 50-100% by titration analysis or to a selective concentration of total boswelli...
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