Aegle marmelos Fruit Powder

Aegle marmelos Fruit Powder

Proposed For Comment Version 0.2

 

Aegle marmelos Fruit Powder

 


 

DEFINITION

The article consists of the dried ripe or unripe fruit of Aegle marmelos (L.) Corréa (Family Rutaceae), reduced to powder or very fine powder. It contains NLT 0.2% of marmelosin on the dried basis.

 

POTENTIAL CONFOUNDING MATERIALS

Limonia acidissima Groff

 

CONSTITUENTS OF INTEREST

Furocoumarin: Marmelosin

 

IDENTIFICATION

• A. Botanical Characteristics

Macroscopic: Yellow powder

Microscopic: Powdered dry fruit pulp is yellowish in color with spots of pale brown-colored dotted structures, sticky and nearly hygroscopic. Thick-walled, polygonal, and irregular-shaped parenchyma cells from the pulp as a major component. Stone cells along with the parenchymatous cells, derived from the mesocarp are observed intermittently. The vascular elements sclerotic hairs are also observed frequently. Most of the fields show the oil globules from the cotyledon cells. Most of the intact or broken parenchyma cells show both simple and compound starches.

 

• B. HPTLC for Articles of Botanical Origin <203>

Standard solution A: 0.1 mg/mL of USP Marmelosin RS in methanol

Standard solution B: 10 mg/mL of USP Aegle marmelos Fruit Dry Extract RS in methanol. Sonicate for 5 min, centrifuge or filter, and use the supernatant or the filtrate.

Sample solution: Sonicate about 1 g of Aegla marmelos Fruit powder in 10 mL of methanol for 10 min, centrifuge or filter, and use the supernatant or the filtrate.

Chromatographic system

Adsorbent: Chromatographic silica gel F254 mixture with an average particle size of 5 µm

Application volume: 10 µL of Standard solution A and 5 µL each of Standard solution B and Sample solution, as 8-mm bands

Relative humidity: Condition the plate to a relative humidity of about 33% using a suitable device.

Developing solvent system: Toluene, ethyl acetate, methanol, and acetic acid (40: 10: 1.25: 1)

Developing distance: 6 cm

Analysis

Samples: Standard solution AStandard solution B, and Sample solution

Apply the Samples as bands and dry in air. Develop in a saturated chamber (20 min with filter paper), remove the plate from the chamber, and dry in air. Examine under UV light at 254 and 365 nm.

System suitability

Samples: Standard solution A and Standard solution B

Suitability requirements: Under UV 254 nm, the chromatogram of Standard solution B exhibits about 7 black bands with the most intense and uppermost band similar in RF and color to the marmelosin band in the chromatogram of Standard solution A. Under UV 365 nm, a pale greenish-blue band appears near the RF of 0.6, similar to the color of the marmelosin band in the chromatogram of Standard solution A. One pale blue and one pale green band appear above the marmelosin band. Below the marmelosin band, one blue band appears  right below the marmelosin band and several bands, with decreasing RF, one pale green band, two pale blue bands, one bright blue band, two pale blue bands, one green band, one pale green band, and one light blue band.

Acceptance criteria: Under UV 254 nm, the chromatogram of Sample solution exhibits the most intense and uppermost band similar in RF and color to the marmelosin band in the chromatogram of Standard solution A. Two minor black bands appear in the lower half of the chromatogram (between RF 0.3 and 0.4). Under UV 365 nm, a pale greenish blue band appears near the RF of 0.6 in the Sample solution similar in color to the marmelosin band in the chromatogram of Standard solution A. One pale blue and one pale green band appear above the marmelosin band. Below the marmelosin band, one blue band appears right below the marmelosin band and several bands, with decreasing RF, one pale green band, two pale blue bands, one bright blue band, two pale blue bands, one green band, one pale green band, and one light blue band.

 

• C. HPLC

Analysis: Proceed as directed in the Assay for Content of Marmelosin.

Acceptance criteria: The chromatogram of the Sample solution exhibits peaks at retention times corresponding to the peaks due to marmelosin in Standard solution B.

 

ASSAY

• Content of Marmelosin

Solution A: 0.2% acetic acid in water

Solution B: Acetonitrile

Mobile phase: See Table 1.

 

Table 1

Time
(min)

Solution A
(%)

Solution B
(%)

0

60

40

20

40

60

24

40

60

27

60

40

30

60

40

 

Standard solution A: 0.01 mg/mL of USP Marmelosin RS in methanol

Standard solution B: Dissolve 0.1 g of USP Aegle marmelos Fruit Dry Extract RS in 100 mL of methanol, sonicate, and pass through a membrane filter of 0.45-µm or finer pore size.

Sample solution: Transfer 0.2 g of Aegle marmelos Fruit Powder, accurately weighed, to a 250-mL flask and add 30 mL of methanol. Reflux at 80° for 30 min and decant the extract into a 100-mL volumetric flask. Repeat the extraction process with another 20 mL of methanol and add the extract to the volumetric flask. Dilute with methanol to volume. Pass through a membrane filter of 0.45-µm pore size.

Chromatographic system

(See Chromatography <621>, System Suitability.)

Detector: UV 300 nm

Column: 4.6-mm × 10-cm; 2.7-μm packing L1

Flow rate: 0.6 mL/min

Injection volume: 20 µL

System suitability

Samples: Standard solution A and Standard solution B

Suitability requirements

Tailing factor: NMT 2.0 for the marmelosin peak, Standard solution A

Relative standard deviation: NMT 2.0% for the marmelosin peak in repeated injections, Standard solution A

Chromatogram similarity: The chromatogram of Standard solution B is similar to the reference chromatogram provided with the lot of USP Aegle marmelos Fruit Dry Extract RS being used.

Analysis

Samples: Standard solution AStandard solution B, and Sample solution

Using the chromatograms of Standard solution AStandard solution B, and the reference chromatogram provided with the lot of USP Aegle marmelos Fruit Dry Extract RS being used, identify the retention times of the peaks corresponding to marmelosin in the Sample solution.

Calculate the percentage of marmelosin in the portion of Aegle marmelos Fruit Powder taken:

 

Result = (rU/rS) x CS x (V/W) x 100

 

rU   = peak area of marmelosin from the Sample solution

rS   = peak area of marmelosin from Standard solution A

CS  = concentration of USP Marmelosin RS in Standard solution A (mg/mL)

V    = volume of the Sample solution (mL)

W   = weight of Aegle marmelos Fruit Powder taken to prepare the Sample solution (mg)

 

Acceptance criteria: NLT 0.2% on the dried basis

 

CONTAMINANTS

• Elemental Impurities—Procedures <233>

Acceptance criteria

Arsenic: NMT 2.0 µg/g

Cadmium: NMT 0.5 µg/g

Lead: NMT 5.0 µg/g

Mercury: NMT 1.0 µg/g

• Articles of Botanical Origin <561>, Pesticide Residue Analysis: Meets the requirements

• Microbial Enumeration Tests <61>: The total aerobic bacterial count does not exceed 105 cfu/g, the total combined molds and yeasts count does not exceed 103 cfu/g, and the bile-tolerant Gram-negative bacteria does not exceed 103 cfu/g.

• Tests for Specified Microorganisms <62>: Meets the requirements of the tests for the absence of Salmonella species and Escherichia coli

 

SPECIFIC TESTS

• Articles of Botanical Origin <561>, Methods of Analysis, Foreign Organic Matter: NMT 2.0%

• Articles of Botanical Origin <561>, Methods of Analysis, Alcohol-Soluble ExtractivesMethod 1: NLT 30%

• Articles of Botanical Origin <561>, Methods of Analysis, Water-Soluble ExtractivesMethod 2: NLT 10%

• Loss on Drying <731>

Sample: 2 g of Aegle marmelos Fruit Powder 

Analysis: Dry the Sample at 105°.

Acceptance criteria: NMT 10%

• Articles of Botanical Origin <561>, Methods of Analysis, Total Ash: NMT 10%

• Articles of Botanical Origin <561>, Methods of Analysis, Acid-Insoluble Ash: NMT 2.0%

 

ADDITIONAL REQUIREMENTS

• Packaging and Storage: Preserve in well-closed containers, protected from light and moisture, and store at room temperature.

• Labeling: The label states the Latin binomial and the part(s) of the plant contained in the article.

• USP Reference Standards <11>

USP Aegle marmelos Fruit Dry Extract RS

USP Marmelosin RS

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Other Versions

Proposed For Development Version 0.1