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Formulation and characterization of food grade water-in-oil emulsions encapsulating mixture of essential amino acids

Bhatti, Hamzah Shahbaz, Khalid, Nauman, Uemura, Kunihiko, Nakajima, Mitsutoshi and Kobayashi, Isao 2016, Formulation and characterization of food grade water-in-oil emulsions encapsulating mixture of essential amino acids, European journal of lipid science and technology, In press, pp. 1-11, doi: 10.1002/ejlt.201600202.

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Title Formulation and characterization of food grade water-in-oil emulsions encapsulating mixture of essential amino acids
Author(s) Bhatti, Hamzah Shahbaz
Khalid, NaumanORCID iD for Khalid, Nauman orcid.org/0000-0002-8045-199X
Uemura, Kunihiko
Nakajima, Mitsutoshi
Kobayashi, Isao
Journal name European journal of lipid science and technology
Season In press
Start page 1
End page 11
Total pages 11
Publisher Wiley-VCH
Place of publication Weinheim, Germany
Publication date 2016-12-16
ISSN 1438-7697
1438-9312
Keyword(s) amino acids
emulsifier concentration
encapsulation
storage stability
W/O emulsions
Summary The present study was conducted to study the encapsulation properties of a mixture of four amino acids (AAs) in the disperse phase of water-in-oil (W/O) emulsions. Four different AAs (methionine, lysine, threonine, and tryptophan) at 1% (w/w) each AA concentration was used in dispersed phase, while the continuous phase constitutes vegetable oils with 5% (w/w) tetraglycerin monolaurate condensed ricinoleic acid esters as an emulsifier. The optimized conditions include homogenization at 7000rpm for 5 min using soybean oil as a continuous phase medium. The average droplet diameter of the W/O emulsions ranged between 4 and 5 μm with a coefficient of variation between 20 and 23%. The W/O emulsions were found to be stable over a period of 30 days at 4°C with slight phase separation at 25°C after 30 days of storage. The W/O emulsions retain about 10.5mg/mL (encapsulation efficiency 79.8%) of amino acids after 30 days of storage at 4 and 25°C. The methionine and lysine have encapsulation efficiency of over 80% in comparison to threonine (79%) and tryptophan (60%) after 30 days of storage at 4 and 25°C.

Practical applications: Multiple studies have emphasized the benefits to human health of including amino acids in the diet and as special nutrient formula for sport persons. For this reason, the study was proposed to formulate a stable emulsion system that could later be able to formulate high energy food or energy drinks. The optimization of formulation parameters is necessary for industrial production and the methodology pointed in this research is far easily to apply and helps in designing new nutraceuticals and functional foods.
Language eng
DOI 10.1002/ejlt.201600202
Field of Research 090899 Food Sciences not elsewhere classified
Socio Economic Objective 0 Not Applicable
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Wiley-VCH
Persistent URL http://hdl.handle.net/10536/DRO/DU:30093221

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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