Model for measuring light stability of photolabile substances in powder beds using spray dried bixin microcapsules

Curi-borda, Cecilia K. (author): Lund University,Lunds universitet,Avdelningen för livsmedel och läkemedel,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Food and Pharma,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH

Tannira, Vandana (author): Lund University,Lunds universitet,Livsmedelsteknik,Avdelningen för livsmedel och läkemedel,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Food Technology, Engineering and Nutrition,Division of Food and Pharma,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH

Gentile, Niko (author): Lund University,Lunds universitet,Institutionen för arkitektur och byggd miljö,Institutioner vid LTH,Lunds Tekniska Högskola,Avdelningen för Energi och byggnadsdesign,Institutionen för bygg- och miljöteknologi,Department of Architecture and Built Environment,Departments at LTH,Faculty of Engineering, LTH,Division of Energy and Building Design,Department of Building and Environmental Technology,Faculty of Engineering, LTH

Bergenståhl, Björn (author): Lund University,Lunds universitet,Avdelningen för livsmedel och läkemedel,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Food and Pharma,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH

(creator_code:org_t)

Elsevier BV, 2021
2021
English.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. - : Elsevier BV. - 0927-7757. ; 627

Related links:: http://dx.doi.org/10... (free); show more...; https://doi.org/10.1...; https://lup.lub.lu.s...; https://doi.org/10.1...; show less...

Abstract Subject headings

Light stability of different spray dried microencapsulated powders containing the natural colorant bixin was evaluated for 30 days. The encapsulating materials evaluated were sucrose, maltodextrin, and mixtures including gum arabic and pectin as encapsulation enhancers. The photostability of two sets of encapsulated material was compared: one containing purified bixin, and one being an annatto extract composed of bixin and native car-bohydrates. The photodegradation of bixin was monitored by vis-spectroscopy and HPLC. The observed degra-dation was 30–70 times slower compared to unprotected colorants. A model was established for describing the degradation process of the colorant in a solid particle form presented as powder beds. It was concluded that encapsulation in combination with light scattering by the matrix structure had a significant effect on the pro-tection of the colorant. The overall enhancement of bixin stability towards UVA-visible light can be attained by microencapsulation through spray-drying. A correlation was observed between encapsulation efficiency and improved photostability of the colorant.

By the author/editor: Curi-borda, Ceci ...; Tannira, Vandana; Gentile, Niko; Alvarado, Juan-a ...; Bergenståhl, Bjö ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Other Engineerin ...; and Food Engineering

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