Raw material exclusively for cosmetic manufacturing

Botanical Cosmetic Raw Material

Rice Extract Koken
RICE FERMENT FILTRATE (SAKE)

Rice Extract Koken is a cosmetic ingredient made from sake brewed withrice from Mie Prefecture.
Sake made with the fermenting capabilities of malted rice and yeast contains
free amino acids and organic acids known as natural moisturizing factors,
and is expected to reﬁne and condition the skin.

Characteristics
Moisturizing eﬀect

Contains amino acids that are components
of natural moisturizing factor (NMF).

Skin conditioning eﬀect

Contains fruit acids that are considered tohave peeling and antioxidant eﬀects andcitric acid, which has a chelating eﬀect.

Blood circulation improvement
eﬀect

Contains alcohol that is eﬀective for vasodilation.

Applications: Lotions, essences, soaps,creams, etc.

Rice Extract Koken
Contains amino acids ,the skin s innate moisturizing ingredientTotal amino acid content
2000

Total aminoacid content
1861 mg/L

Total amino acid content (mg/L)

1800

Composition of amino acids (%)

1600
1400

4

1200

51000
800

4002000

Sake A

Sake B

Rice Extract
Koken Ingredients

24The sake used as the raw ingredient for Rice
Extract Koken contains more amino acids compared with other sake. Approximately 76% of thetotal amino acid content consists of amino acids
that are natural moisturizing factors.

Moisturizing eﬀect
After applying a sheet infused with 400 μL of 1% Rice Extract Koken solution
and 0.1% sodium hyaluronate solution, respectively, to the skin of the forearm,the amount of moisture in the stratum corneum was measured 5 minutes and
10 minutes after removing the sheet using a stratum corneum hydration meter(Corneometer CM825).

Moisturizing Test18

Approximately 76%of the total aminoacid content consists ofnatural moisturizing factors

45131277

From in-house data

Skin conditioning components
Content of major organic acids
and other components

Content of major sugars

Component*

Content (mg/L)

Component*

Content (mg/L)

Lactic acid

335

Glucose15,480

1.6

Malic acid241

Galactose

1,520

1.5Choline

167

Fucose210

1.4

Citric acid

59

Glucosamine

140

Ornithine

32

Fructose

110

GABA

24

*Components excluding preservatives, water,
and alcohol

Betaine22

Uridine21

Fumaric acid

17

1.7

Amount of moisture in the stratumcorneum (relative)

43 21

Other:
Approximately
24%

6600

3Alanine
Arginine
Glutamic acid
ProlineGlycineLeucineSerineValineLysineHistidine
Tyrosine
Phenylalanine
Threonine
Aspartic acid
CystineIsoleucine
Methionine

1.3
1.2
1.1
1

After5minutes

After10minutes

0.1% sodium hyaluronate solution

Amount of hyaluronic acid molecules (1.1 to 1.6 million)

After5minutes

After10minutes

1% Rice Extract Koken solution

1% Rice Extract Koken solution had the equivalentmoisturizing eﬀect as 0.1% sodium hyaluronate solution.

From in-house data

Safety evaluation

In addition to sugars such as glucose andgalactose produced by the fermentation ofmalted rice and yeast, Rice Extract Koken also
contains organic acids such as lactic acid andmalic acid and various other components.
The alcohol concentration of Rice Extract
Koken is approximately 18%.
From in-house data

Human repeated insult patch test (HRIPT): Negative(tested using a 10-fold diluted solution)

Product No.

Product name

INCI name

Other ingredient*Package

RFF-111

Rice Extract Koken MPN

1kg

Rice Extract Koken BG

RICE FERMENT FILTRATE(SAKE)

SODIUM METHYLPARABEN

RFF-121BUTYLENE GLYCOL(DERIVED FROM PLANTS)

1kg*Please contact us at the address shown below if you have requests.

The content in this document is prepared based on documents and experimental data available at the time; however, the content does not comprise a quarantee. Please
note in advance that the content described in this document may be changed depending on the circumstances. All intellectual property rights including copyrights anddesign rights of data described here and related documents belong to Koken Co., Ltd., and any unauthorized reproduction, reprinting or citation is strictly prohibited. Pleaserefer to the MSDS of the product in advance for the safe use of these ingredients. In addition, care should be taken to comply with regulations in each country on expressions
concerning consumer products.

1-4-14 Koraku, Bunkyo-ku, Tokyo 112-0004, Japan Tel: 81-3-3816-3562 Fax: 81-3-3816-3582 E-mail:customer@kokenmpc.co.jp

2017.3 C-1-890-1-02-01