کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4563943 | 1330909 | 2013 | 7 صفحه PDF | دانلود رایگان |
The present study was conducted to encapsulate higher concentration of l-ascorbic acid up to (30 g 100 mL−1) in the dispersed phase of water-in-oil (W/O) emulsions. Their continuous phase contained refined soybean oil or Moringa oleifera oil and a food-grade hydrophobic emulsifier. The volume fraction of the dispersed phase was fixed as to 30%. W/O emulsions with l-ascorbic acid retention greater than 95% were prepared using rotor–stator homogenizer at 7000 rpm for 5 min. The prepared W/O emulsions under this operating conditions had average droplet diameter of 2.0–3.0 μm and coefficients of variation of 13%–22%. All the W/O emulsions were stable for more than 30 days at 4 °C or 25 °C with slight increase in average droplet diameter and without phase separation. Their l-ascorbic acid retentions were 50 g 100 g−1 at 4 °C and 30 g 100 g−1 at 25 °C after 30 days of storage. l-ascorbic acid retention ratio of the prepared W/O emulsions followed first-order kinetics with a good fit.
► Water-in-oil (W/O) emulsions loaded with high concentration of l-ascorbic acid.
► Better stability of l-ascorbic acid encapsulated in W/O emulsions.
► Higher retention (>50%) of l-ascorbic acid in W/O emulsions at 4 °C for ∼30 days.
Journal: LWT - Food Science and Technology - Volume 51, Issue 2, May 2013, Pages 448–454