Decolorization of malva nut gum for skin moisturizing cosmetics

Name: Phichada But-amkha

Organization : Mae Fah Luang University

keyword: Malva nut

LCSH: Cosmetics

Classification :.LCCS: WA744

; ลูกสำรอง

LCSH: Skin

LCSH: Skin Care

LCSH: Malva nut

LCSH: Plants, Medicinal

Abstract: Malva nut [Scaphium scaphigerum (G. Don) Guib. & Planch.] was extracted using DI water, provided malva nut gum (MG) with dark brown color at 73.00 ± 0.88 % (w/w). The MG was decolorized by varying the ratio between MG, volume of water, H2O2 and the decolorizing time. The decolored malva nuts (DMGs) were pale yellow color which effectively brighter than MG. The best condition (19DMG) was the ratio at 2.5 g of MG: 1000 ml water: 250 ml H2O2 for 30 h, yielded 19DMG (51.86 ± 2.19 % w/w). The DMGs were further evaluated on total polysaccharide content and physicochemical properties. This sample was highest total polysaccharide content at 566.48 ± 1.22 mg glucose/g, which was significantly (p = 0.015) better than MG (546.28 ± 8.24 mg glucose/g). The L* (lightness) of 19DMG (78.98 ± 0.76) confirmed brighter in color than MG (65.43 ± 0.03). The uronic acid which is one of key molecule for moisturizing efficacy, the 19DMG (19.19 ± 0.18 %) was significantly (p < 0.001) higher uronic acid content more than MG (18.29 ± 0.14 %) Moreover, the 19DMG was physically and chemically stabled under accelerated stability test. Therefore, the 19DMG was further incorporated into a stable base gel at 0.2%. The 19DMG gel was stable under accelerated stability test and was non-irritant with M.I.I value of 0 in clinical trial. The short term skin moisturizing efficacy was confirmed over 360 min of treatment by Corneometer® CM 825. The 19DMG gel could be enhanced skin hydration better than MG and the benchmark algae polysaccharide gels. Thus, the decolorized process was successively improved the color of MG with a property for application as a safe and efficient skin moisturizing agent.

Mae Fah Luang University

Address: CHIANG RAI

Email: library@mfu.ac.th

Name: Mayuree Kanlayavattanakul

Role: Advisor

Name: Nattaya Lourith

Role: Co-Advisor

Created: 2017

Issued: 2561

Modified: 2020-01-21

Issued: 2018-09-11

วิทยานิพนธ์/Thesis

application/pdf

CallNumber: Thesis WA744 P543d 2017

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Cosmetic Science

Grantor: Mae Fah Luang University

©copyrights Mae Fah Luang University

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	Phichada But-amkha.pdf	3.54 MB	8	2025-10-15 14:11:43

ใช้เวลา

0.030577 วินาที