Belladonna Leaf Ph Between 9.0 and 9.5
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Printed on: Wed Jan 06 2021, 02:36:16 AM Official Status: Currently Official on 06-Jan-2021 DocId: 1_GUID-DF1FD0EE-AAC1-4D8A-972E-9D5AEED0CE9A_1_en-US (EST) Printed by: Jinjiang Yang Official Date: Official as of 01-Aug-2017 Document Type: USP @2021 USPC 1 buffer and sufficient 1 N sodium hydroxide to yield a final Belladonna Leaf pH between 9.0 and 9.5. Add 15 mL of chloroform, shake DEFINITION vigorously, and allow the layers to separate. Filter the Belladonna Leaf consists of the dried leaf and flowering or organic phase through 10 g of anhydrous sodium sulfate fruiting top of Atropa belladonna L. or of its variety acuminata (see Reagents, Indicators, and SolutionsÐSodium Sulfate, Royle ex Lindley (Fam. Solanaceae). Belladonna Leaf yields Anhydrous, Suitability for Alkaloid Assays), previously NLT 0.35% of the alkaloids of belladonna leaf. washed with chloroform and supported in a funnel with a small pledget of glass wool, into a suitable container. ASSAY Extract again with two 15-mL portions of chloroform, · PROCEDURE again collecting the clarified organic phase. Wash the Phosphate buffer: 34.8 g of dibasic potassium phosphate sodium sulfate and the tip of the funnel with 5 mL of in 900 mL of water. Adjust to a pH of 9.5 by the addition chloroform. Evaporate the combined organic phases of 3 N hydrochloric acid or sodium hydroxide, with mixing. under reduced pressure at a temperature below 45°, add Diluent: Dilute sulfuric acid (1 in 350) 1 mL of chloroform, and mix to dissolve the alkaloids, Internal standard solution: 0.8 mg/mL of USP taking care to wet the sides of the container. Homatropine Hydrobromide RS in Diluent. [NOTE—Prepare Chromatographic system fresh on the day of use.] (See Chromatography á621ñ, System Suitability.) Standard stock solution A: 1.0 mg/mL of USP Scopolamine Mode: GC Hydrobromide RS in Diluent Detector: Flame ionization Standard stock solution B: Dissolve 20 mg of USP Atropine Column: 1.2-m × 4-mm glass; packed with 3% G3 on Sulfate RS in 25 mL of Diluent in a 50-mL volumetric flask, S1AB. [NOTE—The column may be cured and conditioned add 2.0 mL of Standard stock solution A, and mix. Add as specified under Chromatography á621ñ, General Diluent to volume. [NOTE—Prepare fresh on the day of use.] Procedures, Gas Chromatography.] Standard solutions: Pipet into three separate 60-mL Temperatures separators 1.0-, 2.0-, and 3.0-mL portions, respectively, of Injection port: 240° Standard stock solution A, and add 9.0, 8.0, and 7.0 mL, Detector: 240° respectively, of Diluent. Add 1.0 mL of Internal standard Column: 215° solution, then add 15 mL of chloroform, shake vigorously, Carrier gas: Dry helium allow the layers to separate, and discard the chloroform Flow rate: 65 mL/min layer. Injection volume: 5 µL Sample solution: Moisten 10 g, previously reduced to a System suitability moderately coarse powder, with a mixture of 8 mL of Sample: Sample solution ammonium hydroxide, 10 mL of alcohol, and 20 mL of Suitability requirements ether, and extract the alkaloids by either Method I or Resolution: NLT 3.0 between atropine and Method II as follows. If necessary, reduce the volume of the homatropine peaks extract to 100 mL by evaporation on a steam bath. Tailing factor: NMT 2.0 for atropine peak Extraction blank: Place 10 mL of Diluent in a 60-mL Relative standard deviation: The analytical system is separator. Prepare as directed under Standard solutions, suitable for conducting this Assay if the relative standard beginning with “then add 15 mL of chloroform”. The blank deviation for the ratio, RA, is NMT 2.0%, for the atropine chromatogram contains no significant interferences at the peak in repeated injections. locus of atropine, scopolamine, or homatropine. Analysis Method I: Place the moistened drug in a Samples: Standard solutions and Sample solution continuous-extraction thimble, and allow maceration to Measure the areas, aA, aH, and aS, of the atropine, proceed overnight, then extract with etherOfficial for 3 h, or longer homatropine, and scopolamine peaks, respectively, in if necessary, to effect complete extraction. each chromatogram of Standard solution, and calculate Method II: Place the moistened drug in a small percolator, the ratios AA and AS: and allow maceration to proceed overnight. Percolate slowly with a mixture of three volumes of ether and one AA = aA/aH volume of chloroform. Continue the percolation until the residue from 3–4 mL of percolate last passed, when AS = aS/aH dissolved in dilute sulfuric acid (1 in 70) and treated with mercuric iodide TS, shows NMT a faint turbidity. Plot the standard curves of the values of RA and RS against Transfer the extract from Method I or Method II to a the amounts, in milligrams, of atropine and scopolamine separator with the aid of ether. Extract with five 15-mL in the solutions. (The ratio of the molecular weight of portions of dilute sulfuric acid (1 in 70), filtering each atropine to that of anhydrous atropine sulfate is 0.8551, portion drawn off into a 100-mL volumetric flask. Wash and the ratio of the molecular weight of scopolamine to the filter with dilute sulfuric acid (1 in 70), and collect the that of anhydrous scopolamine hydrobromide is washings in the flask. Add dilute sulfuric acid (1 in 70) to 0.7894.) Inject a portion of the Sample solution into the volume, and mix. Dilute 20.0 mL of the resulting solution chromatograph, measure the peak areas, and calculate with the same dilute acid to 100.0 mL. Pipet 10 mL of this the area ratios, as with the Standard solutions. Record solution into a 60-mL separator. Add 1.0 mL of Internal from the standard curves the quantities, in milligrams, of standard solution, then add 15 mL of chloroform, shake atropine and scopolamine in the weight of the specimen vigorously, allow the layers to separate, and discard the taken. Add the quantity, in milligrams, of atropine and chloroform layer. [NOTE—If emulsions are formed, a mixed scopolamine, and multiply by 50 to obtain the weight, solvent consisting of chloroform-isopropyl alcohol (10:3) in milligrams, of alkaloids in the portion of Belladonna may be substituted for chloroform throughout the Leaf taken. extraction procedure.] Acceptance criteria: NLT 0.35% of the alkaloids of Add another 15 mL of chloroform, and extract again, belladonna leaf discarding the chloroform phase. Add 15 mL of Phosphate https://online.uspnf.com/uspnf/document/1_GUID-DF1FD0EE-AAC1-4D8A-972E-9D5AEED0CE9A_1_en-US 1/2 Printed on: Wed Jan 06 2021, 02:36:16 AM Official Status: Currently Official on 06-Jan-2021 DocId: 1_GUID-DF1FD0EE-AAC1-4D8A-972E-9D5AEED0CE9A_1_en-US (EST) Printed by: Jinjiang Yang Official Date: Official as of 01-Aug-2017 Document Type: USP @2021 USPC 2 CONTAMINANTS microcrystals. The midrib contains an arc of bicollateral · ARTICLES OF BOTANICAL ORIGIN á561ñ, Methods of Analysis, bundles, collenchyma beneath upper epidermis, and Acid-Insoluble Ash: NMT 3.0% scattered parenchyma cells with microcrystals. · ARTICLES OF BOTANICAL ORIGIN á561ñ, Pesticide Residue Stem: The stem shows an epidermis with striated cuticle Analysis: Meets the requirements and few hairs; a distinct endodermis; small strands of long, · BELLADONNA STEMS: The proportion of belladonna stems thin-walled, slightly lignified pericyclic fibers; and a circle over 10 mm in diameter does not exceed 3.0%. of bicollateral bundles. The parenchyma of the cortex and pith is interspersed with crystal cells. SPECIFIC TESTS Flower: The calyx possesses numerous glandular hairs with · BOTANICAL CHARACTERISTICS uniseriate stalks and one- to three-celled glandular heads. Macroscopic: Usually partly matted together, crumpled or The corolla shows a papillose inner epidermis and an outer broken leaves, together with some smaller stems and a epidermis with glandular hairs similar to those of the number of flowers and fruits. The leaves are thin and brittle, calyx. The pollen grains, when mounted in chloral hydrate mostly light green to moderate olive-green. The lamina is solution, are subspherical, 40 µm in diameter, tricolpate, mostly 5–25 cm in length and 4–12 cm in width and having three germinal furrows and rows of pits between possesses an ovate-lanceolate to broadly ovate outline, an the ridges on the exine. acute to acuminate apex, an entire margin, an acute to Fruit: The epicarp exhibits polygonal epidermal cells with a somewhat decurrent base and slightly hairy surface, the striated cuticle and stomata. The mesocarp consists of hairs being more abundant along the veins; when broken large pulp cells some of which contain rosette aggregate transversely, it shows numerous light-colored dots (crystal crystals of calcium oxalate. cells) visible with a lens. The petiole is slender and usually Seed: The seed is characterized by an epidermis of large, up to 4 cm in length. The flowers possess a campanulate wavy-walled cells with prominent ridges over the corolla with five small, reflexed lobes, purplish to yellowish anticlinal walls. purple, becoming faded to brown or dusky yellow or Powdered Belladonna Leaf: Light olive-brown to yellow; a green, five-lobed calyx; five epipetalous stamens; moderate olive-green in color. The following are among and a superior, bilocular ovary with numerous ovules. The the elements of identification: the separate microcrystals, fruit is subglobular, dark yellow to yellowish brown to dusky the dark gray crystal cells, the cuticular striping of the red or black, up to 12 mm in width, and sometimes epidermal cells, the vessels with ellipsoidal bordered pits, subtended by the persistent calyx and containing the fibers of the stem, and occasional hairs and pollen numerous flattened, somewhat reniform seeds, the latter grains.