Search results for "0404 agricultural biotechnology"

Perspectives of lupine wholemeal protein and protein isolates biodegradation

2018

Lupine (Lupinus angustifolius L.) protein (in wholemeal and protein isolates) was biodegraded using Pediococcus acidilactici in submerged and solid‐state fermentation conditions. The changes in the molecular weight of lupine protein fractions, amino acid (AA) profile, biogenic amine formation, antimicrobial and antioxidant properties, and protein digestibility in vitro and in vivo (in Wistar rats) were evaluated. After biotreatment, lower molecular weight peptides (from 10 to 20 kDa) were established, and the free AA content increased. Biodegradation improved the antioxidant properties, modulated the antimicrobial properties, and led to higher in vitro and in vivo digestibility and function…

Addition of milk fat globule membrane as an ingredient of infant formulas for resembling the polar lipids of human milk

2016

Polar lipid (PL) contents in human milk (HM) from two different geographic zones in Spain (central and coastal) were determined. These PLs were also analysed in several infant formulas (IFs), three of which contained milk fat globule membrane (MFGM), an ingredient used to resemble the PL profile of HM. Total PL in HM decreased significantly (p < 0.05) from transitional milk (48.62 mg 100 mL−1) to 6 months (28.66 mg 100 mL−1). In HM, sphingomyelin was the most abundant PL, followed by phosphatidylethanolamine; in IFs the most abundant PL was phosphatidylethanolamine. Only IFs with MFGM (54.79–58.07 mg 100 mL−1) could supply the total and individual PL content present in all lactation periods…

Comparative Chemical Composition and Bioactivity of Opuntia ficus‐indica Sanguigna and Surfarina Seed Oils Obtained by Traditional and Ultrasound‐Ass…

2018

This study investigates the seed oils obtained from two different varieties of Opuntia ficus-indica (Sanguigna and Surfarina) growing in Sicily, Italy. Soxhlet and ultrasound-assisted extraction procedures are used to obtain the seed oils. The fatty acid profile, γ-tocopherols, carotenoid content, and the bioactivity in terms of the antioxidant effects (using ABTS, DPPH, FRAP, and β-carotene bleaching tests), and carbohydrate-hydrolysing enzyme inhibitory activity (α-amylase and α-glucosidase) are determined. The extraction procedure does not significantly affect the fatty acid composition of the oil, but it does affect the tocopherol and carotenoid contents, as well as the antioxidant and …

Effect of heating method on the microbial levels and acrylamide in corn grits and subsequent use as functional ingredient for bread making

2018

Abstract Cereal by-products represent abundant and low-cost resources of nutrients. The study is dedicated to the development of a rapid method for the treatment of corn grits to obtain value added ingredients for breadmaking. The infrared irradiation (IR) at 76 °C and 90 °C and vacuum microwave (VM) heating at 60 °C have been applied for stabilization of corn grits. The corn grit particles were fractionated by size and it was found that the particle size fraction significantly (p

Seed oil extraction from red prickly pear using hexane and supercritical CO2: assessment of phenolic compound composition, antioxidant and antibacter…

2016

Investigating Opuntia species for their seed oil content is of much importance owing to their potential use for food and in cosmetic applications. These oils have an important content in unsaturated fatty acids as well as antioxidant compounds (e.g. polyphenols, vitamin E), which have been associated with the prevention of some chronic diseases. Moreover, Opuntia stricta oils possess important antimicrobial activities. For instance, the main focus of this study was to compare the effectiveness of conventional (hexane extraction) and novel (supercritical (SC)-CO2 ) extraction methods for the recovery of oil and phenolic compounds from O. stricta seeds. The oil yield of both extracts was then…

Multiplicative decomposition of the scaling effect in the Mixed Assessor Model into a descriptor-specific and an overall coefficients

2016

Abstract In 1994, Brockhoff and Skovgaard presented the so-called assessor model, including a “scaling coefficient” expressing the predisposition of a panelist to spread more or less his scores than the panel on a given sensory descriptor. This paper discusses potential scaling causes, and then proposes a decomposition of the scaling coefficient into two components: (i) an overall scaling coefficient, independent of the descriptors, expressing a psychological trend of the panelist towards the scoring task in general; (ii) a corrected scaling coefficient for each descriptor, expressing specific sensitivity of the panelist to the descriptor. Applied to 187 sensory datasets, this decomposition…

Safe intake of a plant sterol-enriched beverage with milk fat globule membrane: Bioaccessibility of sterol oxides during storage

2018

Abstract Sterols in foods are susceptible to oxidation to form oxysterols. It is interesting for consumer health to know real intake and the possible associated adverse effects associated to oxysterols. This study measured oxysterol formation and bioaccessibility (BA) in a plant sterol (PS)-enriched milk-based fruit beverage with milk fat globule membrane (MFGM) added at 0, 3 and 6 months of storage at room temperature. The same cholesterol (COPs) and phytosterol oxidation products (POPs) (exclusively from β-sitosterol) (7α/β-hydroxy, α/β-epoxy, triol and 7-keto) were detected in the beverage and its bioaccessible fraction. Total COPs and POPs contents were maintained during storage, and th…

Nutraceuticals in gummy candies form prepared from lacto-fermented lupine protein concentrates, as high-quality protein source, incorporated withCitr…

2018

Fermentation in fish and by-products processing: an overview of current research and future prospects

2020

Fish industry has been growing continuously over the last decades and generates huge amounts of by-products. These by-products come from fish head, skin, bones, thorns, and viscera. Part of them are processed for feed, collagen and oil production, and to a lesser extent to produce biofuels and fertilizers, but many other high-value bioactive compounds can be recovered. Fish fermentation, which is traditionally used to increase fish shelf-life, results into the formation of bacteria metabolites of interest. Applied to by-products, fermentation increases the quality of protein hydrolysates, oil and produces antioxidant compounds. This technology, which is safe, environmental-friendly and poor…

Chestnuts and by-products as source of natural antioxidants in meat and meat products: A review

2018

Abstract Background Chestnuts have traditionally been used for both human and animal consumption due to their nutritional properties. During chestnut industrial processing, several by-products are generated, like chestnut wood, flowers, leaves, shells, barks and burs. These by-products constitute an important source of antioxidant compounds, which can be used as food additives to be incorporated in other food products such as meat in order to improve nutritional and quality characteristics as well as to delay oxidation processes. Scope and approach This systematic literature review evaluated the main antioxidant compounds of chestnuts by-products, including total content and profile. Moreov…