milkCoconut milk was obtained by squeezing fresh shreddedcoconut meat in distilled water at 45◦C. The ratio of coconutmeat to distilled water used was 500 g coconut meat to 200 mldistilled water; this is a typical ratio used in extracting coconutmilk. Amounts of fat and protein in the extracted coconutmilk were estimated using liquid extraction as described byNarataruksa et al. (2010) and Kjeldahl method (AOAC, 1990)respectively. It was found that on average in 100 ml, theextracted coconut milk contained 2.63 ± 0.04 g of protein and31.6 ± 1.3 g of fat respectively.
emulsion prepared with WPI was stable against heating at 70 C
but extensively flocculated and coalesced after being treated at
90 C and 120 C. Coconut milk emulsions homogenized with
small-molecule surfactants showed good stability against heating
treatments but were completely destabilized upon freeze–thaw
due to their thin interfacial layer which was less effective in protecting
the droplets from either partial or full coalescence.
This work shows that the interfacial composition is critical to
understanding the effects of processing on coconut milk emulsions.
Therefore, the selection of surface-active stabilizer is important in
producing coconut milk products that are able to maintain good
stabilityand quality after being treated under processing conditions.