Determination of size of calcium oxalate crystals
Calibrate eyepiece micrometer by using stage micrometer and calculate the factor. Mount a little quantity of powdered sample in glycerin water and measure the length
Pharmacognosy
Determination of stomatal index
Stomatal number is defined as the average number of stomata per sq mm of epidermis of the leaf. The actual number of stomata per sq mm may vary for the leaves of the same plant grown in different environment or under different climatic conditions.
Determination of stomatal number
Stoma (plural-stomata) is a minute epidermal opening covered by two kidney shaped guard cells in dicot leaves. These guard cells, in turn, are surrounded
Determination of water-soluble extractive value of Ginger
Ginger contains some water soluble constituents. If the ginger is exhausted with water or soaked in water for a long time while cleaning, the water soluble extractive
Determination of alcohol-soluble extractive value of Ginger
Ginger contains about 1-3 % volatile oil and 5-8 % resins, which are soluble in alcohol.
Different chemical test to analyze the crude drug of asafoetida
The above experiment shows the presence of chemical constituent in drug sample. It is used as intestinal flatulence, carminative, flavouring agent, expectorant, and antispasmodic.
Different chemical test to analyze the crude drug of benzoin
The above experiment shows the presence of chemical constituent in drug sample. It is used as antiseptic, for the preparation of cosmetics, expectorant, carminative, stimulant and diuretics.
Isolation and detection of active principles, caffeine from tea dust
The active constituent caffeine was isolated and detected from the leaves of tea. It can be used as CNS stimulant, specific analgesic in migraine.
Determination of number of starch grains by lycopodium spore method
Lycopodium spores are obtained from club moss, Lycopodium clavatum Linn., belonging to family Lycopodiaceae. The spores are yellow in colour, spheroidol
Isolation and detection of active principles, Sennoside from Senna
Synonym of Indian Senna is Tinnevelly senna, Cassia senna. It consists of dried compound leaflets of Cassia angustifolia belongs to family Leguminosae.
