Pengaruh Konsentrasi Minyak Biji Gandum (Triticum vulgare) Terhadap Nilai Sun Protection Factor (SPF) Krim Tabir Surya Dari Kombinasi Oksibenzon dan Oktilmetoksisinamat

PENGARUH KONSENTRASI MINYAK BIJI GANDUM
(Triticum vulgare) TERHADAP NILAI SUN PROTECTION
FACTOR (SPF) KRIM TABIR SURYA DARI KOMBINASI
OKSIBENZON DAN OKTILMETOKSISINAMAT
ABSTRAK
Latar Belakang: Sinar matahari menghasilkan radiasi salah satunya adalah
radiasi ultraviolet. Radiasi ultraviolet dapat menyebabkan kerusakan kulit, kulit
terbakar serta menyebabkan noda-noda cokelat serta penebalan dan keringnya
kulit. Untuk mencegah efek buruk dari radiasi ultraviolet tersebut, dapat
digunakan sediaan tabir surya untuk perlindungan fisik. Minyak biji
gandum(wheat germ oil)merupakan minyak nabati yang kaya akan asam linoleat
dan juga vitamin E yang berperan sebagai antioksidan.
Tujuan Penelitian: Untuk mengetahui pengaruh dan kestabilan secara fisik
penambahan minyak biji gandum terhadap nilai SPF krim tabir surya kombinasi
oksibenzon dan oktil metoksisinamat.
Metode: Sediaan krim tabir surya dibuat dalam 6 formula yaitu Formula 0 (basis
krim, yaitu butilen glikol, disodium edetat, trietanolamin, petrolatum, setil
alkohol, asam stearat, gliseril monostearat, natrium metabisulfit, nipagin dan air
suling), Formula 1 (blanko), Formula 2 (minyak biji gandum 5%), Formula 3
(minyak biji gandum 7,5%), Formula 4 (minyak biji gandum 10%) dan Formula 5
(minyak biji gandum 12,5%), yang setiap formula mengandung oksibenzon 2%

dan oktil metoksisinamat 5%.Evaluasi sediaan krim meliputiuji homogenitas,
penentuan tipe emulsi, uji pH, uji stabilitas (warna dan bau), uji iritasi kulit, dan
efektivitas SPF sediaan secara in vitro menggunakan spektrofotometer UV. Uji
statistik menggunakan metode One Way Anova.
Hasil: Penelitian menunjukkan bahwa seluruh sediaan krim homogen, tipe emulsi
m/a, pH 6,47-7,90, tidak mengiritasi, dan stabil selama penyimpanan 12 minggu
pada suhu kamar. Penelitian juga menunjukkan semakin meningkatnya
konsentrasi minyak biji gandum yang ditambahkan pada sediaan krim, semakin
tinggi nilai SPF pada sediaan krim. Nilai SPF dari Formula 1 (blanko) adalah
11,04, Formula 2,3,4 dan 5 adalah14,32, 14,77, 15,58, dan 17,91 dengan masingmasing peningkatan dimulai dari Formula 2 adalah sebesar 3,21%, 5,41% dan
14,96%.
Kesimpulan: Penambahan minyak biji gandum pada sediaan krim tabir surya
kombinasi oksibenzon dan oktil metoksisinamat dapat meningkatkan nilai SPF
dari sediaan tersebut dan juga memiliki sifat fisik yang baik.
Kata

kunci:minyak biji gandum,SPF,
metoksisinamat.

tabir

surya,

oksibenzon,

oktil

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Universitas Sumatera Utara

THE EFFECT OF WHEAT GERM OIL (Triticum vulgare)
CONCENTRATION ON SUN PROTECTION FACTOR (SPF)
VALUE OF SUNSCREEN CREAM OF OXYBENZONE AND
OCTYL METHOXYCINNAMATE COMBINATION
ABSTRACT
Background: Sunray produces radiation which one of them is ultraviolet
radiation. The ultraviolet radiation can cause acute skin effect such as erythema,
sunburn, pigmentation and dry skin. In order to protect our skinn from those
ultraviolet radiation effect, we can use sunscreen for physical protection. Wheat
germ oil is a vegetable oil which is rich in linoleic acid and vitamin E that act as

antioxidants. Purpose: The aim of this study was to determine the physical
stabilities and the effect of wheat germ oil concentration variation on SPF value
on sunscreen cream with combination of oxybenzone and octyl
methoxycinnamate.
Methods: The cream preparations were made in 6 formulas such as Formula 0
(cream base, buthylene glycol, disodium edetat, triethanolamine, petrolatum, cetyl
alcohol, stearic acid, glyceryl monostearate, sodium metabisulfite, nipagin and
purified water), Formula 1 (blank), Formula 2 (wheat germ oil 5%), Formula 3
(wheat germ oil 7.5%), Formula 4 (wheat germ oil 10%) and Formula 5 (wheat
germ oil 12.5%), which combined with oxybenzone and octyl methoxycinnamate
2 and 5 %w/w for each formulas. Evaluations conducted on cream such as cream
homogenity, emulsion type, pH value, stability tests (color and odor), skin
irritation and determining SPF value by in vitro way using spectrophotometer UV.
Statistic test used One Way Anova method.
Results: The result of this study showed that all samples are homogen, the
emulsion type was o/w, range of pH 6.47-7.90, non-irritating and stable during 12
weeks of storage at room temperature. The evaluation also showed that along the
increases of the wheat germ oil concentration in cream, the SPF value will also
increased.The SPF value for Formula 1 (blank) was 11.04, Formula 2, Formula 3,
Formula 4 and Formula 5 were 14.32, 14.77, 15.58, and 17.91 with the percentage

started from Formula 2 were 3.21%, 5.41% and 14.96%.
Conclusion: Addition of wheat germ oil on sunscreen cream can increase the
SPF value of sunscreen cream with combination of oxybenzone and octyl
methoxycinnamate and also showed a good physical stability.
Keywords:wheat germ oil, sunscreen, oxybenzone, octyl methoxycinnamate, SPF.

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Universitas Sumatera Utara