Journal
WASTE AND BIOMASS VALORIZATION
Volume 11, Issue 1, Pages 99-108Publisher
SPRINGER
DOI: 10.1007/s12649-018-0450-3
Keywords
Bioactive content; Antioxidant capacity; Degradation kinetics; Chromacity; Hyper and bathochromic shifts
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Funding
- ICAR-Indian Agricultural Research Institute (IARI)
- Department of Science and Technology (DST)
- Science and Engineering Research Board (SERB)
- Confederation of Indian Industry (CII)
- Prathista Industries Limited
- Science and Engineering Research Board (SERB), Department of Science and Technology, Government of India
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Application of extracted black carrot anthocyanins (BCA) and black soybean anthocyanins (BSA) as colour enhancers was demonstrated by copigmenting with heat sensitive anthocyanins from plum, pomegranate, strawberry and jamun. Improved pigment stability was confirmed by thermal stability, chromacity studies and hyperchromic and bathochromic shifts. BCA (2%, 500 mg/L) caused largest hyperchromic shift in plum whereas maximum bathochromic shift (18-20 nm) was observed in strawberry. BSA (2%, 500 mg/L) caused largest hyperchromic shift in pomegranate whereas maximum bathochromic shift (22 nm) was observed in plum. Copigmented plum, jamun, strawberry and pomegranate juices copigmented with BCA achieved high half-life (t(1/2)) and lower rate constant (k) values. Copigmenting anthocyanins with other juice is an effective strategy to impart high thermal stability, improve colour retention and antioxidant activity.
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