- FEMA 3148
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- $1.00 / 1Kg
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2024-07-08
- CAS:3025-30-7
- Min. Order: 1Kg
- Purity: 98%
- Supply Ability: 20T
- FEMA 3148
-
- $300.00 / 1KG
-
2024-06-03
- CAS:3025-30-7
- Min. Order: 1KG
- Purity: 0.98
- Supply Ability: 20 tons
- FEMA 3148
-
- $10.00 / 1KG
-
2024-04-28
- CAS:3025-30-7
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: g-kg-tons, free sample is available
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| | Ethyl 2-trans-4-cis-decadienoate Basic information |
| | Ethyl 2-trans-4-cis-decadienoate Chemical Properties |
| Melting point | -60 °C | | Boiling point | 70-72 °C0.05 mm Hg(lit.) | | density | 0.905 g/mL at 25 °C(lit.) | | vapor pressure | 1.6hPa at 21.1℃ | | FEMA | 3148 | ETHYL TRANS-2,CIS-4-DECADIENOATE | | refractive index | n20/D 1.486(lit.) | | Fp | >230 °F | | storage temp. | 2-8°C | | solubility | Chloroform (Slightly), Methanol (Slightly) | | color | Colourless | | Odor | at 10.00 % in dipropylene glycol. green waxy pear apple sweet fruity tropical | | Odor Type | green | | JECFA Number | 1192 | | BRN | 1724176 | | LogP | 4.1-4.7 at 35℃ and pH7 | | EPA Substance Registry System | 2,4-Decadienoic acid, ethyl ester, (2E,4Z)- (3025-30-7) |
| Hazard Codes | Xi,N | | Risk Statements | 38-50/53 | | Safety Statements | 24/25-61-60 | | RIDADR | UN 3082 9/PG 3 | | WGK Germany | 1 | | RTECS | HD3510900 | | F | 10-23 | | HS Code | 29161995 | | Toxicity | LD50 oral in rat: > 5gm/kg |
| | Ethyl 2-trans-4-cis-decadienoate Usage And Synthesis |
| Chemical Properties | Ethyl-trans-2, cis-4-decadienoate has a characteristic pear-like flavor and a light fruity aroma. | | Chemical Properties |
Ethyl (2E,4Z)-2,4-Decadienoate (Ethyl 2-trans-4-cis-decadienoate) has been identified in pears and has the typical aroma of Williams pears. Synthesis of ethyl (2E,4Z)-2,4-decadienoate starts from (Z)-1-heptenyl bromide, which is converted into a 1-heptenyllithium cuprate complex with lithium and copper iodide. Reaction with ethyl propiolate yields a mixture of 95% ethyl (2E,4Z)- and 5% ethyl (2E,4E)-2,4-decadienoate. Pure ethyl (2E,4Z)-2,4-decadienoate is obtained by fractional distillation. A biotechnological process for its preparation has been developed.
| | Chemical Properties | clear colorless to yellowish liquid | | Occurrence | Reported found in Bartlett pears, apple, grape, durian (Durio zibethinus), pear brandy, quince and spineless
monkey orange (Strychnos madagasc). | | Uses |
The potential applications of Ethyl 2-trans-4-cis-decadienoate include the profile enhancement of guava, melon, pear, apple, banana, kiwi, grape, golden delicious apple, fruit cocktail juices, fruit nectar, mamey and other tropical backgrounds.
Ethyl 2-trans-4-cis-decadienoate (DDSE) is a flavoring that is largely responsible for the aroma of Williams pears is responsible.
| | Definition |
Ethyl (2E,4Z)-deca-2,4-dienoate (Ethyl 2-trans-4-cis-decadienoate) is a fatty acid ethyl ester resulting from the formal condensation of the carboxy group of (2E,4E)-deca-2,4-dienoic acid with the hydroxy group of ethanol. It has a role as a plant metabolite, a flavouring agent, a fragrance and a kairomone. It is a natural product found in Euglena gracilis.
| | Production Methods |
Stillingia oil is one of the fruits of the tallow tree native to China (Stillingia sebifera or Sapium sepiferum, Euphorbiaceae) vegetable fat. It contains about 5% of DDS in the form of glycerides by weight. Ethyl 2-trans-4-cis-decadienoate (DDSE) can be obtained from this by base-catalyzed transesterification with ethanol; however, in food law, this is not a natural process, so the product obtained cannot be called a natural flavouring.
A mixture of Stillingia oil (5 kg), natural ethanol (1.0 kg) and Novozym 435 (1.0 kg) was overlaid with nitrogen in a 20-liter glass vessel at 45 ° C and slowly stirred. The vessel was fitted with a water cooler to prevent losses and minimize evaporation. The approach was cancelled after an incubation period of 2 to 3 each Day. The filtered enzyme was added with fresh Stillingia oil and natural ethanol, and stirring was continued. All 10 cycles were performed, the content of Ethyl 2-trans-4-cis-decadienoate from the individual filtrates varied between 4.0 and 4.7% by weight.
| | Aroma threshold values | Detection: 100 ppb. Aroma characteristics at 1.0%: sweet ripe pear, creamy and slightly fatty with fruity,
green, waxy apple, fleshy nuances | | Taste threshold values | Taste characteristics at 5 ppm: ripe pear, green fruity, waxy apple, tropical notes, fatty golden delicious apple
fleshy. Taste characteristics at 20 ppm: green, fruity, apple and pear with waxy tropical nuances. | | Synthesis Reference(s) | Tetrahedron, 36, p. 1961, 1980 DOI: 10.1016/0040-4020(80)80209-2 | | General Description | Natural occurrence: Apple, pear, grape, pear brandy and quince. | | Biochem/physiol Actions | Odor at 1.0% | | Synthesis | Synthetically via the lithium vinyl cuprates. |
| | Ethyl 2-trans-4-cis-decadienoate Preparation Products And Raw materials |
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