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Caprylic acid methyl ester (Methyl octanoate, CAS 111‑11‑5) is a fatty‑acid methyl ester, a colourless oily liquid with sweet fruity‑wine aroma. Insoluble in water, soluble in ethanol and oils. Approved as flavouring substance (FEMA 2728, JECFA 173). It naturally occurs in some fruits. Mainly used for preparing pineapple, berry and citrus‑type food flavours. It also serves as chromatographic reference standard and chemical synthesis intermediate, with no function as preservative or emulsifier in food systems.
Caprylic acid methyl ester (methyl octanoate, CAS 111‑11‑5, FEMA 2728, JECFA 173) is an authorised synthetic flavouring substance for food use, approved under major global food regulatory systems. It naturally exists in trace amounts in pineapple, citrus fruits, berries and fermented alcoholic beverages, delivering fruity, wine‑like and waxy citrus notes. Its only permitted food‑related function is flavour modification; it has no preservative, emulsifying, antioxidant or nutritional roles in food manufacturing.
Its primary application lies in compounded edible flavour formulations. Flavourists incorporate it to build authentic tropical‑fruit profiles including pineapple, coconut, orange, strawberry and apricot. It adds soft wine‑fermented undertones and balances sharp artificial‑flavour harshness. It is widely blended for carbonated soft drinks, fruit‑flavoured beverages, fruit syrups and ready‑to‑drink products, enhancing the natural‑fruit perception of beverage matrices.
Confectionery and frozen dairy products represent another key application area. It is used in hard candies, chewing gum, fruit‑flavoured sweets, ice cream and sherbets. At low dosage, it enriches fruit aroma without overpowering base sweetness. It is also applied in alcoholic and non‑alcoholic wine‑style drinks, imitating the natural ester aroma of cognac, brandy and fruit wine. In baked goods, it is mainly added into fruit‑flavoured fillings rather than dough itself, because its volatility tends to dissipate under high‑temperature baking conditions.
Strict low‑dosage control is required. Typical concentrations in finished food range from 0.1 mg/kg up to 40 mg/kg. Over‑dosage produces unpleasant fatty‑waxy off‑flavours which spoil sensory quality. Since it is nearly insoluble in water, it must be pre‑dissolved in ethanol, propylene glycol or edible oils before addition into water‑based food systems.
It is important to note that caprylic acid methyl ester cannot act as technical food additive. It does not inhibit microbial growth, stabilise texture or provide nutrition. Large‑volume industrial‑grade material serves as chemical intermediate and biodiesel component, and such grades must not enter food production streams. Pure reagent‑grade material is only used for chromatographic reference in food‑testing laboratories.
In summary, caprylic acid methyl ester functions exclusively as a flavour‑enhancing agent in food. Major end‑uses cover beverages, confectionery, frozen desserts and wine‑type flavour systems. Formulators must follow regional flavour‑substance regulations, keep usage within recommended ppm ranges, and handle its poor water‑solubility during compounding. It bears no approved technical functions beyond aroma adjustment for finished food products.
Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical and Intermediates, Food and Feed additives, Fine chemicals,Biochemical and Reagent, which is the members of Hubei E-commerce Chamber.
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