Rice bran series

Summary

In the 1890s, a Dutch military physician, Christiaan Eijkman and his assistant discovered that polished “white rice” could cause leg weakness on chickens. It was later proved that the Vitamin B1 removed during the polishing (i.e. the rice bran) was the cause of sick chickens[1]. Subsequently, the micronutrients rich in rice bran were continuously discovered, such as oryzanol, sitosterol, vitamin E, squalene, etc.[2]

Since its establishment in 1994, Delekang has been dedicated to research and manufacture of rice bran series products. We have successively developed oryzanol, ferulic acid, rice bran sterol and phytosterol, continuously exploiting the value of rice bran.

History of rice bran series

  • In July 1995, gamma oryzanol was launched in the market.

  • In 2003, Delekang developed the rice bran oil of first-class in national standard.

  • In 2005, ferulic acid was introduced.


Rice bran oil

Introduction

In the perspective of nutrition, oils and fats is the carrier of fat-soluble Vitamin A, D and E, and also an important part of cell walls and other biological structures. In cooking, oils and fats also affect the flavor of food. [3]

Vitamin E, including our tocopherols and four tocotrienols [4], is a fat-soluble antioxidant that protects cell membrane from reactive oxygen species (ROS). [5]

Compared with tocopherols, tocotrienols have stronger anti-oxidant property[6], which are naturally derived from plant oil, especially rice bran oil.[7]

The content of Vitamin E in plant oils(mg/kg)[7]

Edible plant oilTocopherolsTocotrienols
Sample sizeConcentration(mg/100g) Sample sizeConcentration(mg/100g)
α-Tβ-Tγ-Tδ-T α-T3(β+γ)-T3δ-T3
Coconut oil3............ 22.891.52...
Palm kernel oil30.62......... 21.94......
Sesame oil462.670.2641.161.11 15.........
Walnut oil22.710.1724.122.58 ----
Flaxseed oil93.421.7936.441.26 11.00......
Palm stearin28.44......... 27.7811.812.25
Blend oil3510.761.4957.0317.75 ----
Soybean oil9411.392.5765.4023.74 310.050.030.04
Tea seed oil2812.20.120.400.15 1.........
Canola oil113.12...35.690.54 ----
Olive oil8214.380.721.520.29 300.48......
Camellia oil2014.810.490.680.14 6.........
Palm oil1915.260.532.921.11 59.4721.652.63
Grapeseed oil418.980.798.221.23 17.7314.080.38
Rapeseed oil6819.640.5739.254.49 21.........
Rice bran oil1819.840.864.540.95 1112.1815.810.41
Peanut oil7121.681.3816.402.00 19.........
Corn oil7427.451.7754.283.25 190.594.00...
Safflower oil431.820.520.500.07 ----
Cottonseed oil355.31...40.252.69 32.82......
Sunflower oil7262.983.863.700.65 72.........
Wheat germ oil1169.5769.2816.771.09 ----

Specification

Based on the national standard GB/T 19112-2003

Items Class 1 Class 2 Class 3
Color Lovibond 5 1/4″ Y ≤ 35 R ≤ 3.5 Y ≤ 35 R ≤ 5.0 --
Color Lovibond 1″ -- -- Y ≤ 35 R ≤ 3.0
Acid value (mg KOH/g) ≤ 0.20 ≤ 0.30 ≤ 1.0
Peroxide value (mmol/kg) ≤ 5.0 ≤ 5.0 ≤ 7.5
Solvent residue (mg/kg) ND ND ≤ 20
Soap content (%) -- -- ≤ 0.03
Insoluble impurities (%) ≤ 0.05 ≤ 0.05 ≤ 0.05
Moisture and volatiles (%) ≤ 0.05 ≤ 0.05 ≤ 0.10
Smoke point (°C) ≥ 215 ≥ 205 --
Refrigeration test (0°C) clear and transparent in 24h clear and transparent in 5.5h --
Iodine value (g/100g) 92-115 92-115 92-115

Packaging

Storage

Store in light-tight, airtight and dry condition


Gamma Oryzanol

CAS number: 11042-64-1

HS code: 29189900.90

National standard code: WS1-47(B)-89-2016

Introduction

Gamma oryzanol is a lipid composite mainly derived from rice bran. It is used to improve climacteric syndrome, anxiety, insomnia in Japan,[8] while in China, it is used for dysautonomia premenstrual syndrome and climacteric syndrome. [9]

Structure

24-Methylene cycloartanyl ferulate

24-Methylene cycloartanyl ferulate(35-40%)

 Cycloartenyl Ferulate

Cycloartenyl Ferulate(25-30%)

Campesteryl ferulate

Campesteryl ferulate (10-15%)

β-sitosteryl ferulate

β-sitosteryl ferulate (5-10%)

Specification

Items Standard
Assay 97.0 ~ 103.0%
Loss on drying ≤ 0.8%
Residue on ignition ≤ 0.2%
Heavy metal ≤ 10 mg/kg
Arsenic ≤ 2 mg/kg
Solubility Soluble in acetone, slightly soluble in orthane, insoluble in water

Packaging

20 kg/drum

Storage

Store in light-tight, airtight and dry condition


Ferulic acid

CAS number: 537-98-4

HS code: 29189900.90

Other name: (2E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid

Chemical formula C10H10O4

Molecular mass 194.184

Introduction

Ferulic acid is a very common component in natural plants and usually used as a raw material for spices. It mainly exists in the cell wall. Its tronger antioxidant property can protect cell, which make ferulic acid applicable as antioxidant and photostage inhabitation in cosmetics [10]. Ferulic acid also presents in some herbal medicines, such as female ginseng, Cimicifuga foetida and Ligusticum wallichii. [11]

Structure

Ferulic acid

Specification

Items Standard
Content ≥ 99.0%
Loss on drying ≤ 0.5%
Residue on ignition ≤ 0.2%
Heavy metal ≤ 10 mg/kg
Arsenic ≤ 2 mg/kg
Melting point 170.0~174.0°C

Packaging

20 kg/drum

Storage

Store in light-tight, airtight and dry condition


Phytosterol

CAS number: 83-46-5

HS number: 29061990.90

Introduction

Sterols are the major trace substance in fat.

Cholesterol is a type of sterols, the main sterols in animal’s fat. There are two types of sterols in human blood: high-density lipoprotein (HDL)cholesterol and low-density lipoprotein (LDL) cholesterol. Excessive accumulation of LDL cholesterol in the serum can lead to blockage of arteries and heart disease.

Acceding to the EFSA

Moderate intake of phytosterol can lower blood cholesterol level and reduce the risk of coronary heart disease. [12]

The U.S. Food and Drug Administration (FDA) allows food labels to be noted:

Phytosterol can reduce the risk of coronary heart disease. [13]

Health Canada also allows it to be shown on food labels that plant sterol can help reduce cholesterol level. [14]

Although phytosterol has good stability, it can cause oxidation when it is exposed to high temperatures or the air. Eating oxidizing phytosterols can lead to inflammation, unstable hormone levels, carcinogenicity and other health problems.

Application

Industrial grade: it can be used as the starting material for steroid drugs

Food grade: it can be used as food additives, health care raw materials

Specification

Specification

Items 90/50 Size 95/50 Size
Total sterol ≥90.0% ≥95.0%
β-sitosterol ≥50.0% ≥50.0%
Stigmasterol / /
Campesterol / /
Residue on ignition ≤0.5% ≤0.5%
Loss on drying ≤2.0% ≤2.0%
Heavy metal ≤10mg/kg ≤10mg/kg
Arsenic ≤2mg/kg ≤2mg/kg
Solubility Soluble in thermal ethanol, slightly soluble in ethanol, insoluble in water. Soluble in thermal ethanol, slightly soluble in ethanol, insoluble in water.

Packaging

20 kg/drum

Storage

Store in airtight, light-tight and dry condition


Rice bran sterol

CAS number: 83-46-5

HS custom number: 2906199090

National standard code: WS-10001-(HD-0908)-2002

Introduction

Sterol, also known as Rice Bran Sterol Tablets in China, is used for bleeding gums, periodontal abscesses and other conditions caused by periodontal disease.

Specification

Items specification
Total sterol ≥63.0%
unsaponifiable matter ≥90.0%
Saponification ≤6.5mg KOH/g
Acid value ≤5.0mg KOH/g
Drying on loss ≤2.0%
The total number of aerobic bacteria ≤1000 cfu/g
The total number of molds and yeasts ≤100 cfu/g
E. coli Negative

Packaging

25 kg/drum

Storage condition

Prevented from light and stored in airtight and dry condition


Reference

  1. "The Nobel Prize and the Discovery of Vitamins". www.nobelprize.org.
  2. Barron, Jon (21 September 2010). "Black Rice Bran, the Next Superfood?". Baseline of Health Foundation.
  3. S. M. Ghazani; A. G. Marangoni (4 January 2016). "Healthy Fats and Oils". Encyclopedia of Food Grains, Vol: 2-4, 257-267.
  4. "Vitamin E". Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis, OR. 1 October 2015.
  5. "Vitamin E". Office of Dietary Supplements, US National Institutes of Health. 12 July 2019.
  6. Serbinova E, Kagan V, Han D, Packer L (1991). "Free radical recycling and intramembrane mobility in the antioxidant properties of alpha-tocopherol and alpha-tocotrienol". Free Radical Biology & Medicine. 10 (5): 263–75.
  7. 吴轲, 孙涵潇,祝 捷,蔡美琴.中国油脂[J].常见食用植物油中维生素 E 异构体含量调查研究,2019,(44-10):95-99.
  8. Fuji M, Butler JP, et al. Gamma-oryzanol for behavioural and psychological symptoms of dementia. Psychogeriatrics. 2018;18(2):151-152.
  9. 中华人民共和国卫生部药典委员会.中华人民共和国卫生部药品标准化学药品及制剂[M].谷维素, 1989,(1):H1-55.
  10. Zduńska K, Dana A, Kolodziejczak A, Rotsztejn H: Antioxidant Properties of Ferulic Acid and Its Possible Application. Skin Pharmacol Physiol 2018;31:332-336.
  11. Sakai, S.; Kawamata, H.; Kogure, T.; Mantani, N.; Terasawa, K.; Umatake, M.; Ochiai, H. (1999). "Inhibitory effect of ferulic acid and isoferulic acid on the production of macrophage inflammatory protein-2 in response to respiratory syncytial virus infection in RAW264.7 cells". Mediators of Inflammation. 8(3): 173–175.
  12. European Food Safety Authority. Scientific Opinion of the Panel on Dietetic Products Nutrition and Allergies on a request from Unilever PLC/NV on Plant Sterols and lower/reduced blood cholesterol, reduced the risk of (coronary) heart disease. The EFSA Journal (2008) 781, 1–12.
  13. U.S. Food & Drug Administration. Health claims: plant sterol/stanol esters and risk of coronary heart disease (CHD). 21 C.F.R. §101.83 (2017, April 1).
  14. Health Canada. (2010, May 26). Plant Sterols and Blood Cholesterol Lowering.