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procedure spektrofotometricheskogo definitions arbutina

Nearby 0,5 g (exact naveska) propagules of the Labrador tea which is passing through a sieve of 2 mm, placed in a pencil-point flask capacity of 100 ml, added 25 ml of 70 % of spirit ethyl, attached a flask to an anatropic refrigerator and heated up at moderate boil on the water bath within 15 minutes.

Extraction cooled to a room temperature and filtrated through buyomazhnyj the filter in a measured flask capacity of 100 ml so that raw materials particles have not got on the filter. Operation spent once again about 25 ml of spirit ethyl. Extraction lead up to a label of 70 % spirit ethyl (solution). 3 ml of solution And placed in a column with oksidom aluminium and eljuirovali 15 ml of 70 % of spirit ethyl. Eljuat collected in a measured flask capacity of 25 ml, lead up volume to a label of 70 % spirit ethyl and stirred (solution). Absorbency of solution Would measure on spektrofotometyore Council of Federation-46 at length of a wave of 285 nanometers in a ditch with thickness of a working layer 1 see As comparison solution used 70 % spirit ethyl, propushchenyonyj through a column from aluminium oksidom.

Preparation hromatograficheskoj columns. 3,0 g aluminium oksida neutral for a chromatography (L 40/250) firms Lachema (Czechia) promyyotogo water cleared before neutral reaction, placed in glass koyolonku in diameter 1,5 sm, height 25 sm and flushed 5 ml of 70 % of ethanol.

The maintenance arbutina in raw materials (in %) calculated under the formula with the account

Quotient incomplete eljuirovanija arbutina [145]:

Dxl00*25 xK

At where.

H, % =

- 81 -

D - absorbency of investigated solution; — a specific indicator of absorption arbutina, equal 72,23; and - alikvota extractions, ml; m - navesyoka raw materials, g; To - quotient incomplete eljuirovanija, equal 1,14025.

3.2.6.

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Scientific source Korotayeva MARINA SERGEEVNA. FARMAKOGNOSTICHESKY STUDYING of FOUR KINDS of SORT LEDUM L. The dissertation on competition of a scientific degree of the candidate of pharmaceutical sciences. Yaroslavl -. 2006

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