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Publication of CS276343B6publicationCriticalpatent/CS276343B6/en
Camomile extracts with a natural flavone content of at least 80 mg%, or with an increased flavone content obtd. by joint extn. of the whole flower heads and ray-florets (normally removed during processing), are claimed. Extn. is pref. effected with an aq. aliphatic mono- or polyhydric alcohol at 10-50 deg.C.
CS856166A1985-08-291985-08-29Process for preparing chamomile extracts rich in flavone
CS276343B6
(en)
A method for modifying a wild strain of a "shigella", in order to produce a modified strain suitable for preparing a vaccine against the wild strain, and a "shigella" strain thus modified.