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Application of high hydrostatic pressure to promote bioactive extractability in prickly pears (Opuntia ficus-Indica L. mill)

AuthorsGómez-Maqueo, Andrea; García-Cayuela, Tomás ; Guajardo-Flores, Daniel; Welti-Chanes, Jorge; Cano, M. Pilar
KeywordsPrickly pears
High hydrostatic pressures
Issue Date2018
CitationIII Jornadas Científicas CIAL Fórum (2018)
Abstract[Background and Objectives] High hydrostatic pressure (HHP) is an innovative non-thermic technology which increases cell wall permeability and cellular membrane rupture and may therefore enhance the liberation of bioactives from vegetable cells. Prickly pears are relevant sources of nutraceutical compounds with high antioxidant and anti-inflammatory activities, therefore, the aim of this study is to apply HHP under specific conditions to increase bioactive extractability and promote their bioaccessibility.
[Method(s) and Results] In this study, Mexican and Spanish prickly pears (var. purple Pelota and purple-red Sanguinos, respectively) were submitted to HHP (pressure: 100, 350 and 600 MPa; time: 5 min holding time and come-up time (CUT); temperature: 20°C). The profile of individual betalains and phenolics was characterized and quantified by HPLC-DAD-ESI-QTOF to determine optimal conditions for bioactive increment. Betanin was the most abundant betalain in both prickly pear varieties with 136 and 1,861 μg/ g dry weight in Sanguinos and Pelota pulps. In Sanguinos and Pelota varieties there was a 13% and 25% betanin increment at 350 MPa (CUT), respectively. The detected 17 phenolics corresponded mostly to flavonoid (isorhamnetin, quercetin and kaempferol) glycosides and phenolic acid, piscidic acid. The total isorhamnetin glycosides (IGs) presented the highest increment of 88% and 141% at 600 MPa in pulps of the Sanguinos and Pelota varieties, respectively, with no significant differences between CUT and holding time. In peels, IG increment was only observed in the Pelota variety. Piscidic acid increased 59% at 600 MPa in pulps of both varieties with no significant differences between CUT and holding time.
[Conclusions] These results demonstrate that HHP may be used to increase prickly pear health-potential by enhancing bioactive extractability.
[Significance and Impact of the Study] These results show an interesting application of HPP for enhancement of cold extraction of potential functional ingredients from Opuntia.
DescriptionResumen del trabajo presentado a las III Jornadas Científicas CIAL Fórum, celebradas del 22 al 23 de noviembre de 2018 en el Instituto de Investigación en Ciencias de la Alimentación (CIAL).
Appears in Collections:(CIAL) Comunicaciones congresos
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