Authors
Molina, Adriana K.
Pereira, Carla
Dias, Maria Inês
Heleno, Sandrina A.
Advisor(s)
Abstract(s)
Lonicera caerulea L. (haskap) berries are widely known for their richness in anthocyanins.
In this study, such fruits were assessed for their nutritional and chemical composition, but also as
sources of anthocyanins with great colouring properties to be applied in foodstu . Haskap presented
high levels of water, four free sugars (mainly fructose and glucose), five organic acids (mainly
citric, malic, and quinic), - and
-tocopherol, twenty fatty acids (with prevalence of linoleic acid),
and eight phenolic compounds, among which six were anthocyanins (mainly cyanidin-3-O-glucoside).
The extract presented great antioxidant properties, evaluated through TBARS and OxHLIA assays,
as well as antimicrobial capacity against six bacteria and six fungi. Two colourants were obtained
by spray-drying haskap juice with maltodextrin and a mixture of maltodextrin and arabic gum.
These formulations were stable over 12 weeks of storage at room and refrigerated temperature,
without significant variations in colour parameters and in anthocyanins concentration. They were
considered safe for consumption once neither microbial contamination nor cytotoxicity in non-tumour
cells were detected. The results obtained allow for the consideration of haskap as a promising
source of colourants to be applied not only in the food industry, but also in other fields that rely on
artificial colourants.
Description
Keywords
Anthocyanins Antimicrobial Antioxidant Colouring formulations Lonicera caerulea L
Pedagogical Context
Citation
Molina, Adriana K.; Vega, Erika N.; Pereira, Carla; Dias, Maria Inês; Heleno, Sandrina A.; Rodrigues, Paula; Fernandes, Isabel P.; Barreiro, Maria Filomena; Kostić, Marina; Soković, Marina; Barreira, João C.M.; Barros, Lillian; Ferreira, Isabel C.F.R. (2019). Promising antioxidant and antimicrobial food colourants from Lonicera caerulea L. var. Kamtschatica. Antioxidants. ISSN 2076-3921. 8, p. 1-18