Lipophilitation of Dioscorea rotundata P. starch and its possible use as an emulsifying agent

Miladys Esther Torrenegra Alarcón; Glicerio León Méndez; Germán Eduardo Matiz Melo; Judith Daniela Sastoque Gomez

2015, Number 4

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Rev Cubana Farm 2015; 49 (4)

**Lipophilitation of Dioscorea rotundata P. starch and its possible use as an emulsifying agent**

Torrenegra AME, León MG, Matiz MGE, Sastoque GJD

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Language: Spanish
References: 22
Page: 605-617
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ABSTRACT

Objectives: to assess the emulsifying capacity of the native starch, the hydrolyzed and hydrolyzed-lipophilyzed products from the tuber Yam (Dioscorea rotundata).
Methods: the starch was obtained by the conventional method of grating and decant. Native yam starch was evaluated. It was hydrolyzed in an acid medium (40 g starch+100 mL water+3,4 g HCl for 6 hours at 50°C). Part of the hydrolyzed starch was lipophilyzed at two levels (10 and 15 mL) through reaction with dodecenyl succinic anhydride (DDSA). The emulsifying capacity was calculated by mixing 25 mL of corn oil, 25 mL of water and 1 g of starch in triplicate with strong homogenization (Ultra Turrax^®), and the amount of material still emulsified after 24 hours was then measured.
Results: there were observed variations in the native starch properties. It was easy to observe the expected tendency in the substitution percentages of starches, that is, the more reagent, the more substitution. The results showed that the lipophilitation of starch increases the emulsifying capacity.
Conclusions: the starches lipophilyzed with dodecenyl succinic anhydride (DDSA) are raw materials that can be considered as a new alternative in the cosmetics industry.

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