STUDY OF COLOR PROPERTIES OF TEAK LEAF EXTRACTS FOR HAIR DYEING

Name: NATTHAWADEE TIBKAWIN

ThaSH: Teak leaves

ThaSH: Natural colorants

ThaSH: Hair dyes

Abstract: Teak (Tectona grandis Linn.) leaves contain several color substances that could be used as dyes in hair dye products. In this research, both the young and mature teak leaves were extracted with various solvents using decoction methods. The effect of maturity stage of teak leaves and extraction solvents on the color properties were studied. The color values of the extracts were measured by CIELAB system. The color substances of the extracts were quantified the total phenolic (TPC), flavonoid (TFC) and anthraquinone (TAC) contents and identified by LC-MS analysis. The solubility, stability, hair dyeing ability and color fastness property of the hair dyed were also studied. Fifty percent ethanol was the best solvent for extracting the extracts for both young and mature leaves. The young leaf extracts are redder with higher antioxidant activity, TPC and TFC than the mature leaf extracts. Polysorbate 20 increased water solubility of the extracts to 80.0 g/l for young leaf extract and 76.9 g/l for mature leaf extract. Both photostability and accelerated stability testing found some flavonoid degradation, but slightly change in color of both the young and mature leaf extracts, which promoted their dyeing usage. Hair dyed with young leaf extract was reddish brown, while was brown with mature leaf extract. Moreover, mordants can both change the color shade and increased the color intensity of the dyed hair. FeSO4 gave the dark brown hair, KAl(SO4)2 gave the reddish-brown hair.

NARESUAN UNIVERSITY. NARESUAN UNIVERSITY LIBRARY

Address: PHITSANULOK

Email: library@nu.ac.th

Name: Pensri Charoensit

Role: Assistant Professor

Created: 2566

Modified: 2566-10-20

Issued: 2023-03-01

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Master of Science

Level: ปริญญาโท

Descipline: Cosmetic Science

Grantor: มหาวิทยาลัยนเรศวร

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