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Marta Alejandre Amela

Most recent scientific publications (since 2010)

Authors: Astiasarán I; Ansorena D, (Autor de correspondencia); et al.
ISSN 0963-9969  Vol. 122  2019  pp. 129 - 136
Conventional canola oil and structured canola oil systems, consisting of oil in water hydrogelled emulsions (with 1.5% or 3% kappa carrageenan) and ethylcellulose organogels (12%, with 0%, 1.5% or 3% glycerol monostearate), were used to replace beef fat in emulsion type meat batters. Replacement with regular canola oil increased hardness and lightness (P < .05) of the reformulated products as compared to those with beef fat. Structuring the oil resulted in similar color and texture (P > .05), and lower oxidation values (P < .05) of meat batters. Reformulated products also gave rise to a healthier fatty acid profile, evidenced by a decrease in saturated fatty acids (SFA) from 11.8% to approximate to 2% and an increase in polyunsaturated fatty acids (PUFA) from 0.3% to approximate to 5%. Omega-6 to omega-3 ratio also decreased (16.2 to approximate to 2) when incorporating canola oil into meat batters. Batters formulated with organogels showed improved matrix stability compared to those with hydrogelled emulsions, which showed some coalescence of fat globules and fat losses during cooking, resulting in a reduction of fat content (P < .05).
Authors: Ansorena D, (Autor de correspondencia); Cama, S.; et al.
ISSN 1654-6628  Vol. 63  2019  pp. 1 - 7
Background: Food labeling is an important communication tool for the exposure of nutrition information in foods. Objective: The presence of labeling messages related to nutrients, health properties, allergens, and additives in meat products marketed in Spain was analyzed in this work. The data collection was done through the web pages of six Spanish meat industries, and 642 products were gathered. The following labeling information was collected: the presence of nutrition claims, the presence of health claims, messages indicating the absence of additives, and those reporting the absence or presence of allergenic substances. Results: A total of 1,254 messages were found with the following distribution: 72% were related to the presence/absence of allergens, 19% were nutrition claims, 8% were messages related to the absence of additives, and only 0.4% were health claims. Fat was the nutrient most frequently referred in the nutrition claims, accounting for a 63.5% of this type of claims, with the expression 'low-fat', as the most used (42% of total nutrition claims). Prevalence of processed meat products that showed nutrition claims was 29%, whereas the percentage of products that showed information about allergenic compounds was 83%. Conclusion: This work provides information about the presence of health-related messages in a high number of meat products, which could be useful as a tool for marketing purposes or for consumer trends evaluation studies.
Authors: Ansorena D, (Autor de correspondencia); Calvo, María Isabel; et al.
ISSN 0309-1740  Vol. 148  2019  pp. 219 - 222
The addition of a blackthorn branch extract (Prunus spinosa L.) to a gel emulsion system containing microalgal oil was examined in order to obtain a functional ingredient (APG), for use as fat replacer in beef patties. Chromatographic analysis indicated that catechins were the major polyphenols present in the Prunus spinosa L. extract. The antioxidant capacity increased as a result of the extract addition, as shown by the comparison of the gel emulsions, with and without it (APG and AG, respectively). Beef patties containing APG as fat replacer (modified patties) had a lower fat content (5.3% versus 10.75%), doubled the antioxidant activity and the DHA content, and improved the stability against oxidation by reducing the peroxide content more than two fold when compared to control patties. In addition, instrumental color measured by the CIE L*a*b* system showed no significant difference between control and modified raw patties. Moreover, the sensory acceptability of the new formulation was confirmed by a like/dislike hedonic test.
Authors: Ansorena D; et al.
ISSN 1132-2675  Vol. 265  2018  pp. 144 - 150
Authors: Passerini, D.; Astiasarán I; et al.
ISSN 0309-1740  Vol. 134  2017  pp. 7 - 3
A new low-energy gelled emulsion containing algae oil was developed as animal fat replacer. Its stability was evaluated under different storage conditions: 4 V (4 degrees C/vacuum), 4NV (4 degrees C/no vacuum), 25 V (25 degrees C/vacuum) and 25NV (25 degrees C/no vacuum). According to moisture, hardness, color and lipid oxidation data, 4 degrees C under vacuum (4 V) was selected as the best condition. Once the gelled emulsion was characterized, its effectiveness as fat analogue was demonstrated in beef patties. Reformulated patties were produced with 100% of animal fat replacement and compared to conventional patties (9%fat). A 70%fat reduction was achieved in the new patties, mainly due to a reduction in the saturated fatty acids. Also, decreased n-6 (76%lower content) and increased eicosapentaenoic and docosahexaenoic acids (55%higher content) were noticed in the new formulation. The incorporation of the gelled emulsion containing reduced amount of n-6 fatty acids and increased amounts of long chain n-3 fatty acids (EPA + DHA) reduced the oxidation status of the patties and their sensory evaluation resulted in acceptable scores.
Authors: Ansorena D; et al.
ISSN 1132-2675  Vol. 256  2017  pp. 97 - 106