Objective:

2

To rapidly identify

Cyathula officinalis

and its adulterant

C

.

capitata

and

C

.

officinalis

*

C

.

capitata

and doped adulterant.

Method:

2

Properties combined with foam test method were used for identifying

C

.

officinalis

its adulterant and doped adulterant. In the aspect of properties

6 aspects including shape

size

texture

color

smell and taste

were observed

smelled and tasted. In the aspect of foam test

the volume of foam produced was used as the determination index to investigate the sample amount

water amount

shaking time

particle size

water temperature

repeatability

adulteration ratio and its stability.

Result:

2

In the aspect of properties

C

.

officinalis

and its adulterant showed obvious difference in the shape

size

color

texture

smell and taste

especially the red color and bitter taste of its adulterant. In the aspect of foam test

the optimum parameters were as follows: sample particle (screened with 3sieves) 0.3g

a test tube with plug and scale

water 10mL and airtight

forced shaking up and down for 1min

settling for 5min. Such method can be used to identify

C

.

officinalis

its adulterant and doped adulterant. The volume of foams produced by

C

.

officinalis

and its adulterant and different ratio of doped adulterant showed no change within 5-30min

slightly decreases after 9h; the higher adulteration ratio; the larger volume of foam and better stability. The 8 batches of

C

.

officinalis

and 8 batch of adulterants proved that the volume of the foams produced was all less than 2mL in the

C

.

officinalis

more than 13mL in the adulterant is

and more than 5mL in 5% doped adulterant

showing statistical difference. From the properties combined with foam test

5specific identification elements were obtained for identifying

C

.

officinalis

its adulterant and doped adulterant.

Conclusion:

2

Through the 5specific identification elements

the properties combined with foam test can be used to distinguish the

C

.

officinalis

from its adulterant

C

.

officinalis

and

C

.

officinalis

*

C

.

capitata

and doped adulterant

characterized by accuracy

simpleness

short time

low cost and feasibility. It can provide a new method and reference for identifying

C

.

officinalis

from its adulterant and doped adulterant.