Research on Pickering emulsification technology based on the concept of “combination of medicine and adjuvant” to improve the pH stability of volatile oil in solid preparations—taking Lingzhu Pulvis as an Example

AAPS Open

Table 1 Results of the study

Samples	Solubility	d₉₀/µm	Contact angle /°
Pearl powder	Insoluble	58.57	73.63 ± 2.58
Amber	Insoluble	61.46	87.27 ± 1.33
Cinnabar	Insoluble	28.82	74.23 ± 2.33
Artificial bezoar	Insoluble	89.01	30.3 ± 1.30
Cornu Antelopis	Insoluble	147.44	88.87 ± 2.66
Bombyx batryticatus and Arisaema cum Bile	Insoluble	260.33	64.07 ± 0.75