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Title: Retention of colour intensity in henna paste during storage
Authors: Verma, Neeraj
Mehra, D S
Niyogi, U K
Khandal, R K
Keywords: Henna paste;Henna cones;Colour Intensity;Gas generation;Lawsonia inermis
Issue Date: Apr-2008
Publisher: CSIR
IPC Code: Int. cl.8 A61K 8/97, A61Q 5/10, C09B 61/00
Abstract: Henna (Mehndi), Lawsonia inermis Linn. has been known as the natural source of dye, besides having medicinal properties. Henna powder is made into a paste in water and used for skin decorations, tattooing and hair dyeing. On drying, the paste imparts a dark brown -black stain. In order to help the users henna paste is supplied in the conical packing to facilitate several types of designs on the hands and other parts of the body. Since the paste of henna is made in water, on storage in various types of packing especially cones loose its staining power. The present study was taken up as a case study to ascertain the reasons for loss of performance in many commercial products available in the market. The study includes the characterization and effect of various factors on the stability of henna paste and also suggests ways to ensure the desired performance during storage. The results revealed that to maintain staining power of henna paste in cones the pH of the paste should be below 4 in aseptically sealed cones. The paste made from irradiated henna powder in combination with citric acid and sodium methyl paraben has a long storage life and good retention of colour.
Page(s): 117-121
ISSN: 0975-1092 (Online); 0972-592X (Print)
Appears in Collections:NPR Vol.7(2) [March-April 2008]

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