Percorrer por autor "Ferreira, Iasmin da Silva"
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- Adding value to endogenous resources: spicy chestnut bits and salty chestnut crackers... Wanna a bite?Publication . Barbosa, Carolina; Gualter, Francisco; Ferreira, Iasmin da Silva; Quintino, Mariah; Andrade, Paula Ariane; Witiak, Roksana; Cabo, Paula; Campos, João C.Portugal is a leading producer of chestnuts, which are deeply rooted in the country's economy, gastronomy, and cultural heritage. To positively impact the chestnut sector's economic value, a co-creation project was initiated to develop chestnut-based food products that can add value and boost consumption. Two products were proposed: spicy chestnut bits and salty chestnut crackers, both of which received positive feedback from market surveys regarding their flavour, shape, and consumption occasion attributes. These products aim to shape the supply to changes in nut consumption, create new ways for chestnut intake, and explore potential synergies with other chestnut-based products.
- Adding value to endogenous resources: spicy chestnut bits and salty chestnut crackers... Wanna a bite?Publication . Barbosa, Carolina; Gualter, Francisco; Ferreira, Iasmin da Silva; Quintino, Mariah; Andrade, Paula Ariane; Witiak, Roksana; Cabo, Paula; Campos, João C.Two new products were created to address the challenge of promoting the nut value chain. The spicy chestnut appetizers involve baking frozen chestnuts with spices to create a warm or room-temperature snack. The salty chestnut flour cookies incorporate chestnuts and spices into a modified recipe for a savoury treat.
- Alheiras with animal fat replacement: application of a gelled emulsion based on hemp oil (Cannabis sativa L.) and buckwheatPublication . Botella-Martinez, Carmen; Fernandez-Lopez, Juana; Ferreira, Iasmin da Silva; Leite, Ana; Vasconcelos, Lia; Dominguez, Rubén; Perez-Alvarez, José Angel; Teixeira, Alfredo; Viuda-Martos, ManuelA gelled emulsion elaborated using hemp seed oil and buckwheat flour was utilized as pork backfat substitute in a typical Portuguese meat product named Alheira. Three different formulations were prepared: Alheiras control (AC) with a fat content of 13%, alheiras where the 25% pork backfat was substituted with a hemp seed oil-GE (AH25), and alheiras where the 50% pork backfat was substituted with a hemp seed oil-GE (AH50). The chemical composition as well as the physicochemical properties and lipid stability of different samples were assessed. Reformulated samples showed similar protein, moisture, and fat content (p < 0.05) that AC. However, AH25 and AH50 had a higher amount of linoleic acid (16.29 and 22.14 g/100 g, respectively) and linolenic acid (1.75 and 3.45 g/100 g, respectively) than AC (12.71 and 0.51 g/100 g). Similarly, AH25 and AH50 showed lower saturated fatty acids (35.28 and 30.37 g/100 g, respectively) than AC (37.37 g/100 g). The substitution of pork backfat for hemp seed oil-GE did not modify significantly the physicochemical properties of samples. On the other hand, the lipid oxidation values increased by 30 and 65% in AH25 and AH50 respectively, in comparison to AC due to the use of polyunsaturated oils, which are highly susceptible to oxidation. This work established that the use of gelled emulsions elaborated using hemp oil and buckwheat flour may be a promising strategy to obtain meat products with a better healthier profile.
- Análise dos efeitos da redução e substituição de NaCl na qualidade físico-química de chouriças de carne de porco bísaroPublication . Ferreira, Iasmin da Silva; Rodrigues, Sandra; Oliveira, Miguel; Pereira, Etelvina; Teixeira, AlfredoO objetivo deste estudo foi verificar o efeito da redução e substituição de NaCl na qualidade físico-química de chouriças de carne. Verificou-se que a referida substuição não alterou as características físico-químicas das chouriças de forma significativa
- Análise dos efeitos da redução e substituição de NaCl na qualidade físico-química de chouriças de carne de porco bísaroPublication . Ferreira, Iasmin da Silva; Rodrigues, Sandra; Oliveira, Miguel; Pereira, Etelvina; Teixeira, AlfredoO objetivo deste estudo foi verificar o efeito da redução e substituição de NaCl na qualidade físico-química de chouriças de carne. Verificou-se que a referida substuição não alterou as características físico-químicas das chouriças de forma significativa
- Can near-infrared spectroscopy replace a panel of tasters in sensory analysis of dry-cured bísaro loin?Publication . Vasconcelos, Lia; Dias, L.G.; Leite, Ana; Ferreira, Iasmin da Silva; Pereira, Etelvina; Bona, Evandro; Mateo, Javier; Rodrigues, Sandra; Teixeira, AlfredoThis study involved a comprehensive examination of sensory attributes in dry-cured Bísaro loins, including odor, androsterone, scatol, lean color, fat color, hardness, juiciness, chewiness, flavor intensity and flavor persistence. An analysis of 40 samples revealed a wide variation in these attributes, ensuring a robust margin for multivariate calibration purposes. The respective near-infrared (NIR) spectra unveiled distinct peaks associated with significant components, such as proteins, lipids and water. Support vector regression (SVR) models were methodically calibrated for all sensory attributes, with optimal results using multiplicative scattering correction pre-treatment, MinMax normalization and the radial base kernel (non-linear SVR model). This process involved partitioning the data into calibration (67%) and prediction (33%) subsets using the SPXY algorithm. The model parameters were optimized via a hybrid algorithm based on particle swarm optimization (PSO) to effectively minimize the root-mean-square error (RMSECV) derived from five-fold cross-validation and ensure the attainment of optimal model performance and predictive accuracy. The predictive models exhibited acceptable results, characterized by R-squared values close to 1 (0.9616–0.9955) and low RMSE values (0.0400–0.1031). The prediction set’s relative standard deviation (RSD) remained under 5%. Comparisons with prior research revealed significant improvements in prediction accuracy, particularly when considering attributes like pig meat aroma, hardness, fat color and flavor intensity. This research underscores the potential of advanced analytical techniques to improve the precision of sensory evaluations in food quality assessment. Such advancements have the potential to benefit both the research community and the meat industry by closely aligning their practices with consumer preferences and expectations.
- Can the inclusion of different olive oil cakes on diet affect carcass quality of Bísaro?Publication . Leite, Ana; Ferreira, Iasmin da Silva; Vasconcelos, Lia; Domínguez, Rubén; Rodrigues, Sandra; Outor-Monteiro, Divanildo; Pinheiro, Victor; Lorenzo, José M.; Teixeira, AlfredoThe present work aimed to evaluate the potential incorporation of olive by-products olive cake (crude olive cake, exhausted olive cake without and with olive oil and two-phase olive cake) in the diet of Bísaro pigs, a local breed reared in Trás-os-Montes region (northeast of Portugal) and to study its effect on the animal´s growth traits and carcass characteristics. The experiment was carried out on 40 Bísaro pigs selected from animals delivered for slaughter to Bragança-Portugal. Five different treatments with different olive cakes (T1 – basal diet; T2 – 10% crude olive oil; T3 – 10% olive cake two phases, T4 – 10% exhausted olive cake; and T5 – 10% exhausted olive cake + 1% olive oil) were. Body weight, pH (1 and 24 hours after slaughter) and carcass weight were similar in all treatments and no significant differences were observed. No significant differences were found between the treatments for the carcass measurements performed, except for the longissimus dorsi length at seventh rib (P<0.05) varying between 75.9 (T3) and 87.3 (T5) mm and fat depth measured at the last rib (P3 measurement) varying between 91.1 (T5) and 99.2 (T4) (P<0.05). The data provide the definition of a standard carcass for the breed and this ratio of body weight. Results indicate that this oil by-product can be used to feeding Bísaro pigs.
- Can the inclusion of different olive oil cakes on diet affect carcass quality of Bísaro?Publication . Leite, Ana; Ferreira, Iasmin da Silva; Vasconcelos, Lia; Domínguez, Rubén; Rodrigues, Sandra; Outor-Monteiro, Divanildo; Pinheiro, Victor; Lorenzo, José M.; Teixeira, AlfredoThe present work aimed to evaluate the potential incorporation of olive by-products olive cake (crude olive cake, exhausted olive cake without and with olive oil and two-phase olive cake) in the diet of Bísaro pigs, a local breed reared in Trás-os-Montes region (northeast of Portugal) and to study its effect on the animal´s growth traits and carcass characteristics
- Can the introduction of different olive cakes affect the carcass, meat and fat quality of bísaro pork?Publication . Leite, Ana; Domínguez, Rubén; Vasconcelos, Lia; Ferreira, Iasmin da Silva; Pereira, Etelvina; Pinheiro, Victor; Outor-Monteiro, Divanildo; Rodrigues, Sandra; Lorenzo, José M.; Santos, Eva María; Andrés, Silvina Cecilia; Campagnol, Paulo C.B.; Teixeira, AlfredoThe implementation of climate-smart policies to enhance carbon sequestration and reduce emissions is being encouraged worldwide to fight climate change. Afforestation practices and rewilding initiatives are climate-smart examples suggested to tackle these issues. In contrast, fire-smart approaches, by stimulating traditional farmland activities or agroforestry practices, could also assist climate regulation while protecting biodiversity. However, there is scarce information concerning the potential impacts of these alternative land management strategies on climate regulation ecosystem services and biodiversity conservation. As such, this work simulates future effects of different land management strategies in the Transboundary Biosphere Reserve of Meseta Ibérica (Portugal-Spain). Climate-smart (‘Afforestation’, ‘Rewilding’) and fire-smart (‘Farmland recovery’, ‘Agroforestry recovery’) scenarios were modelled over a period of 60 years (1990–2050), and their impacts on climate regulation services were evaluated. Species distribution models for 207 vertebrates were built and future gains/losses in climate-habitat suitability were quantified. Results suggest climate-smart policies as the best for climate regulation (0.98 Mg C ha−1 yr−1 of mean carbon sequestration increase and 6801.5 M€ of avoided economic losses in 2020–2050 under Afforestation scenarios), while providing the largest habitat gains for threatened species (around 50% for endangered and critically endangered species under Rewilding scenarios). Fire-smart scenarios also benefit carbon regulation services (0.82 Mg C ha−1 yr−1 of mean carbon sequestration increase and 3476.3 M€ of avoided economic losses in 2020–2050 under Agroforestry scenarios), benefiting the majority of open-habitat species. This study highlights the main challenges concerning management policies in European rural mountains, while informing decision-makers regarding landscape planning under global change.
- Chemical, physicochemical and sensorial characterization of nitrite-free dry-cured bísaro shouldersPublication . Leite, Ana; Vasconcelos, Lia; Ferreira, Iasmin da Silva; Sarmiento-García, Ainhoa; Domínguez, Rubén; Santos, Eva María; Campagnol, Paulo C.B.; Rodrigues, Sandra; Lorenzo, José M.; Teixeira, AlfredoThe aim of the current experiment was to characterize and evaluate the effect of the dry-curing process on chemical composition, physicochemical properties, and sensory characteristics of the dry-cured Bísaro shoulders. For this purpose, thirty-eight raw forelegs were used, and no nitrites were added during the dry-curing process. This process increased protein, fat, ash content, and pH, with a decrease in moisture and water activity (p < 0.001). The dry-cured shoulders were darker (L*), less red (a*), and less yellow (b*) than the raw shoulders (p < 0.001), and this may be mainly due to the moisture reduction. The proportion of polyunsaturated fatty acids (PUFA) decreased during processing, whereas the saturated fatty acids (SFA) and monounsaturated fatty acids (MUFA) increased (p < 0.001), which could be related with the oxidative degradation. The sensory analysis showed that dry-cured Bísaro shoulders presented similar organoleptic characteristics to other dry-cured meat products. Also, the chemical composition and fatty acid profile of the dry-cured Bísaro shoulder showed results comparable to those of other cured products. This study revealed that it is possible to obtain safer and healthier dry-cured Bísaro shoulder products judging by these characteristics, since nitrites were not added in its preparation. These findings, along with the product’s high sensory attributes similar to more popular products such as ham, would give more advantage for its acceptability and market demand
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