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1.
J Agric Food Chem ; 72(12): 6213-6225, 2024 Mar 27.
Artículo en Inglés | MEDLINE | ID: mdl-38501388

RESUMEN

Human milk is naturally rich in medium- and long-chain triacylglycerols (MLCT), accounting for approximately 30% of the total fat. However, infant formula fat is prepared using a physical blend of vegetable oils, which rarely contains MLCT, similar to human milk. The differences in MLCT between human milk and infant formulas may cause different lipid metabolisms and physiological effects on infants, which are unknown. This study aimed to analyze the metabolic characteristics of formula lipid containing novel human milk fat substitutes based on MLCT (FL-MLCT) and compare their effects with those of the physical blend of vegetable oils (FL-PB) on lipid metabolism and gut microbiota in mice. Compared with the FL-PB group, the FL-MLCT group showed increased energy expenditure, decreased serum triacylglycerol level, and significantly lower aspartate aminotransferase level, epididymal and perirenal fat weight, and adipocyte size. Moreover, the abundances of Firmicutes/Bacteroidota, Actinobacteriota, and Desulfovibrionaceae were significantly decreased in the FL-MLCT group. Novel human milk fat substitutes MLCT could inhibit visceral fat accumulation, improve liver function, and modulate the mice gut microbiota composition, which may contribute to controlling obesity.


Asunto(s)
Sustitutos de Grasa , Microbioma Gastrointestinal , Lactante , Humanos , Ratones , Animales , Triglicéridos/metabolismo , Metabolismo de los Lípidos , Leche Humana/metabolismo , Ratones Endogámicos C57BL , Aceites de Plantas/metabolismo , Termogénesis
2.
Food Res Int ; 173(Pt 2): 113371, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37803709

RESUMEN

An investigation was conducted to assess the gelation characteristics of amino acid amidated pectin and its subsequent influence on the quality of minced chicken breast (MCB) when employed as a lipid substitute. Through experimentation, it was evidenced that amidated pectin, such as glycine amidated pectin (AP@Gly), glutamic amidated pectin (AP@Glu), and lysine amidated pectin (AP@Lys), demonstrated superior viscosity and gelation capacity in comparison to their native pectin (PE) counterpart. In contrast to PE, amidated pectin samples exhibited the potential to form high-strength hydrogels under conditions of minimal restriction. Additionally, evaluations conducted on all samples established that MCB samples enriched with pectin and amidated pectin demonstrated superior water retention capability. Before thermal processing, MCB samples fortified with amidated pectin showcased higher hardness and L* values in comparison to PE and the control group. However, upon thermal processing, no significant divergence was found in the chroma and texture profile analysis (TPA) attributes across all MCB samples, and the electronic tongue sensory evaluation was closely aligned with the control group. This evidence substantiates the effectiveness of amidated pectin samples as viable lipid substitutes in MCB products.


Asunto(s)
Sustitutos de Grasa , Pectinas , Animales , Pectinas/química , Pollos/metabolismo , Carne/análisis , Lípidos
3.
Int J Med Mushrooms ; 25(9): 73-83, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37824407

RESUMEN

To investigate the effect of Agaricus bisporus and soybean oil as complex fat substitutes on the storage characteristics of chicken sausages, a pre-mixture of A. bisporus and soybean oil (1:2) was used to replace 0% (CK), 30% (T30), 60% (T60), and 90% (T90) of pork back fat in chicken sausages. The changes in color (brightness value, L*; redness value, a*; and yellowness value, b*), texture, pH, and total viable count of the sausages were examined at 1, 5, 10, 15, 20, 25, 30 and 35 d of storage at 4°C, respectively. The results showed that A. bisporus and soybean oil altered the color of the sausages. At the same storage time, compared with CK, L* values of fat-reduced chicken sausages decreased significantly, while a* values increased significantly (P < 0.05), b* values increased significantly (P < 0.05) at the 10 d of storage. During storage, L* and a* values of CK gradually decreased and b* values gradually increased, fat-reduced sausages exhibited opposite trends in a* values and b* values compared with CK. The hardness and chewiness of fat-reduced sausages increased significantly (P < 0.05) compared with CK at the same storage time. During storage, the overall hardness of fat-reduced sausages increased, and the springiness and chewiness fluctuated. T60 did not change significantly in cohesiveness throughout the storage period (P < 0.05). The pH of fat-reduced sausage was relatively stable during storage. The higher the amount of A. bisporus added, the greater the pH. The pH of T60 did not change throughout the storage period. A. bisporus and soybean oil showed some antibacterial effect on sausage and the minimum shelf life of chicken sausage with A. bisporus was 25 d. In conclusion, A. bisporus and soybean oil increased the redness and hardness of the sausages during storage, but the pH and total viable bacteria count remained relatively stable. T60 displayed the most stable storage properties among them, making it the optimum method for the manufacturing of fat-reduced chicken sausages.


Asunto(s)
Sustitutos de Grasa , Productos de la Carne , Animales , Aceite de Soja , Pollos , Productos de la Carne/análisis
4.
Meat Sci ; 199: 109143, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-36827828

RESUMEN

Buffalo burgers were prepared with 50% or 100% buffalo backfat substitution using walnut, and peanut oil emulsion gels (EGs) blended with chia flour. Burgers were stored at 2 °C in modified atmosphere packaging for 12 days. The fat replacement decreased total fat by 26% and increased ash by 34%. Hardness and chewiness decreased with increasing the fat replacement; however, it did not affect springiness and cohesiveness values. Burger reformulations led to an increase in cooking yield (10%). Walnut oil EGs increased PUFA level up to 458%. Both oils enhanced PUFA/SFA and ω-6/ω-3 ratios and atherogenic and thrombogenic indices. Concerning color attribute, about 66% reduction was observed in redness values during the storage period of 12 days. Moreover, the sensory scores for all attributes, i.e., appearance, odor, flavor, and juiciness, were in the acceptable range of five or above in the reformulated burgers. In conclusion, 50% fat substitution using walnut and peanut oil EGs improved the nutritional profile of buffalo burgers without compromising the technological and sensory characteristics.


Asunto(s)
Sustitutos de Grasa , Ácidos Grasos Omega-3 , Animales , Ácidos Grasos , Aceites de Plantas/química , Búfalos , Hidrogeles , Aceite de Cacahuete , Emulsiones/química , Ácidos Grasos Omega-3/química
5.
Meat Sci ; 198: 109087, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36628894

RESUMEN

In this work, the differences in macrostructure and microstructure, rheology, and storage stability of pre-emulsified safflower oil (PSO) prepared by natural and magnetic field modified soy 11S globulin were analysised. It was concluded that the PSO with magnetic field modified soy 11S globulin (MPSO) has better emulsifying activity and physical stability. The changes in gel quality, oxidational sensitivity, rheological, and sensory properties of pork batters with different substitute ratios (0%, 25%, 50%, 75%, and 100%) of pork back-fat by MPSO with magnetic field modified soy 11S globulin were studied. Compared to the sample without MPSO, pork batter with MPSO showed higher emulsion stability, apparent viscosity, L⁎ value, springiness, cohesiveness, and expressible moisture, while lower a⁎ value and cooking loss. Moreover, added MPSO could be more uniformly distributed into the meat matrix with smaller holes. With the increase in the replacement proportion of pork back-fat, the hardness, water- and fat-holding capacity, and P21 of pork batter significantly decreased (P < 0.05). As revealed by sensory evaluation and TBARS, using MPSO to substitute for pork back-fat decreased the lipid oxidational sensitivity of pork batter, and without negative effects on the appearance, juiciness and overall acceptability. Overall, it is feasible to apply MPSO as a pork-fat replacer to produce reduced-animal fat pork batter with excellent gel and sensory properties.


Asunto(s)
Sustitutos de Grasa , Globulinas , Carne de Cerdo , Carne Roja , Animales , Porcinos , Manipulación de Alimentos , Aceite de Cártamo , Sustitutos de Grasa/química , Reología , Campos Magnéticos
6.
Food Res Int ; 160: 111719, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-36076460

RESUMEN

In this paper, α-alanine and ß-alanine were used as modifiers to prepare α-alanine amidated pectin (α-AP) and ß-alanine amidated pectin (ß-AP) through enzymatic method. The effects of alanine and its isomer on the amidation degree and physicochemical properties of pectin were studied. Fourier transform infrared spectrum, proton nuclear magnetic resonance analysis, X-ray photoelectron spectrum and elemental analysis indicated that the amino groups from α-C and ß-C could be aminated with the carboxyl group of pectin to form the corresponding aminated pectin. The alanine grafting ratio of α-AP and ß-AP were 21.99% and 18.92%, respectively. The results showed that the dynamic viscosity of ß-AP was significantly higher than that of α-AP due to the influence of amino acid side chain. However, due to the higher alanine grafting ratio of α-AP, the strength of hydrogel prepared by α-AP was higher than that of ß-AP, and it also has the highest elastic modulus and swelling capacity. In addition, pectin, as a carbohydrate-based fat substitute, has been widely used in the field of food to simulate the smooth and delicate taste of fat. Compared with High methoxy pectin (HMP) and ß-AP, α-AP had better colloid stability and smaller hydrogel particles in the composite system. The results provide references for the application of amidated pectin in low-fat food.


Asunto(s)
Sustitutos de Grasa , Pectinas , Alanina , Hidrogeles , Pectinas/química , beta-Alanina
7.
Food Chem ; 393: 133332, 2022 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-35661604

RESUMEN

Human milk lipids differ from the milk lipids of other mammals in composition and positional distribution of fatty acids. Analysis and detection technology of lipids is key to understanding milk lipids, and thus the concentrations, compositions and distribution characteristics of milk lipids are discussed. Differences between human milk lipids and their substitutes in form, composition and structure affect their digestion, absorption and function in infants. Characteristics and mimicking of human milk lipids have been intensively studied with the objective of narrowing the gap between human milk and infant formulae. Based on the existing achievements, further progress may be made by improving detection techniques, deepening knowledge of metabolic pathways and perfecting fat substitutes. This review detailed the characteristics of human milk lipids and related detection technologies with a view towards providing a clear direction for research on mimicking human milk lipids in formulae to further improve infant nutrition.


Asunto(s)
Sustitutos de Grasa , Leche Humana , Animales , Ácidos Grasos/análisis , Humanos , Lactante , Fórmulas Infantiles/química , Fenómenos Fisiológicos Nutricionales del Lactante , Mamíferos , Leche/química , Leche Humana/química
8.
Molecules ; 27(8)2022 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-35458595

RESUMEN

This study evaluates the effects of using a fat substitute in beef burgers composed of a hydrogel emulsion enriched with encapsulated safflower oil and açai extract. The influences of the fat substitute on the chemical (TBARS, fatty acids, and volatile compounds profile) and physical (weight loss, cooking loss, water-holding capacity, color, and texture analyses) characteristics of the burgers were analyzed after 0, 4 and 8 days of storage at 4 ± 1 °C. The obtained results were compared with control groups (20 g of tallow or 8 g of safflower oil). The fat substitute used improved burger parameters such as chewiness, hardness and the a* color parameter remained unchanged over storage time. The addition of açai extract slowed the oxidation rate of polyunsaturated fatty acids and reduced the changes in the volatile compounds profile during the storage of burgers. The utilization of a fat substitute enriched the burgers with polyunsaturated fatty acids and lowered the atherogenic index (0.49 raw, 0.58 grilled burger) and the thrombogenicity index (0.8 raw, 1.09 grilled burger), while it increased the hypocholesterolemic/hypercholesterolemic ratio (2.59 raw, 2.09 grilled burger) of consumed meat. Thus, the application of the presented fat substitute in the form of a hydrogel enriched with açai berry extract extended the shelf life of the final product and contributed to the creation of a healthier meat product that met the nutritional recommendations.


Asunto(s)
Sustitutos de Grasa , Productos de la Carne , Animales , Bovinos , Emulsiones , Sustitutos de Grasa/química , Ácidos Grasos Insaturados/análisis , Hidrogeles/química , Productos de la Carne/análisis , Extractos Vegetales/química , Aceite de Cártamo
9.
Food Chem ; 387: 132907, 2022 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-35405554

RESUMEN

Rapeseed oil has a similar oleic acid/linoleic acid ratio to human milk fat (HMF). However, it can hardly be used for human milk fat substitute (HMFS) synthesis due to high erucic acid content. In this study, Candida cylindracea lipase (CCL) was found to strongly discriminate against erucic acid. Free fatty acids containing low erucic acid and high oleic acid and linoleic acid were prepared from rapeseed oil hydrolysis catalyzed by CCL. The erucic acid content was only 1.58% (initial 8.70%), when the degree of hydrolysis reached 79.58%. The free fatty acids were used as acyl-donors in the acidolysis catalyzed by Novozym 40086. Considering acyl incorporation and migration, the optimum conditions were 1:8 (tripalmitin to acyl-donors), 40 °C and 2 h. The erucic acid content dropped to 0.97% in the HMFS. According to the Q-TOF-MS analysis, the HMFS was rich in 1,3-dioleoyl-2-palmitoyl-glycerol (18.20%) and 1-oleoyl-2-palmitoyl-3-linoleoyl-glycerol (17.96%), which was similar to HMF.


Asunto(s)
Sustitutos de Grasa , Ácidos Erucicos , Ácidos Grasos , Ácidos Grasos no Esterificados , Humanos , Ácido Linoleico , Lipasa/metabolismo , Leche Humana/metabolismo , Ácido Oléico/metabolismo , Aceites de Plantas , Aceite de Brassica napus , Triglicéridos/metabolismo
10.
J Texture Stud ; 52(4): 520-533, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34076280

RESUMEN

Lipophilic sea buckthorn pomace extract isolated by supercritical CO2 (LSBPE) was structurized with different amounts of carnauba wax or beeswax as oleogelators. Oleogels were also made with added water at an LSBPE:water ratio of 70:30. LSBPE was characterized by a favorable ratio of omega-6 to omega-3 fatty acids (1:3) and reasonable amounts of omega-7 fatty acids (4.45% of total), tocopherols (63.0 mg/100 g) and carotenoids (700.1 mg/100 g). The oleogels were characterized by their structural and rheological properties, and physical and chemical stability during storage. Carnauba wax produced a gel-like structure with a highly condensed network of aggregated crystals, while beeswax oleogels displayed elongated crystals which formed interconnected networks. Carnauba wax gels were harder than beeswax gels with better oil-binding capacity and higher crystallization and melting temperatures. Both oleogels showed good physical and oxidative stability during storage due to the immobilization of oil in the three-dimensional structures, and the presence of strong lipophilic antioxidants in LSBPE, respectively. As the proportion of waxes increased from 5 to 17.5%, the hardness, oil-binding capacity, crystallization, and melting temperatures increased in both gels due to the more developed crystalline associations. Addition of water had no significant effect on the physical and chemical stability of oleogels during storage. Water was distributed as small droplets in the crystalline network of oleogelators. However, hardness and oil-binding capacity decreased as water was added. Rich in polyunsaturated fatty acids and bioactive compounds, LSBPE oleogels offer the opportunity to deliver bioactives while simultaneously acting as fat substitutes.


Asunto(s)
Sustitutos de Grasa , Hippophae , Dióxido de Carbono , Compuestos Orgánicos , Extractos Vegetales
11.
Food Funct ; 12(16): 7185-7197, 2021 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-34169299

RESUMEN

Structured fat phases are the basis of many consumer relevant properties of fat-containing foods. To realise a nutritional improvement - less saturated, more unsaturated fatty acids - edible oleogels could be remedy. The feasibility of traditional fat phases structured by oleogel in culinary products has been evaluated in this study. In this contribution the oleogel application in bouillon cubes as model system for culinary products is discussed. Three different gelators (sunflower wax (SFW), a mixture of ß-Sitosterol and γ-Oryzanol (SO) and ethylcellulose (EC)), at two concentration levels (5% and 10% (w/w)) each, were evaluated with respect to their physical properties, in the food matrix and application. The application of pure and structured canola oil (CO) was benchmarked against the reference, palm fat (PO). The assessment of the prototypes covered attempts to correlate the physicochemical analyses and sensory data. Organoleptic and analytical studies covered storage stability (up to 6 months) monitoring texture, color and fat oxidation. The results indicate that the substitution of palm fat by oleogel is essentially possible. The characteristics of the bouillon cubes are tuneable by gelator choice and inclusion level. Most importantly, the data show that the anticipated risk of intolerable effects of oxidation during shelf life is limited if antioxidants are used.


Asunto(s)
Sustitutos de Grasa/química , Manipulación de Alimentos/métodos , Calidad de los Alimentos , Valor Nutritivo , Celulosa/análogos & derivados , Celulosa/química , Fenómenos Químicos , Helianthus/química , Humanos , Compuestos Orgánicos/química , Fenilpropionatos/química , Aceite de Brassica napus/química , Sitoesteroles/química , Gusto , Ceras/química
12.
Meat Sci ; 176: 108464, 2021 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-33618129

RESUMEN

The study aimed to highlight the utilization of gelled emulsion (GE) systems containing peanut and linseed oils to replace beef fat partially or completely in emulsified sausages. Total fat content was reduced by up to 40% and energy content was lowered by up to 27% in reformulated products. Saturated fatty acids and cholesterol were successfully decreased while noticeable increments were provided in mono and poly-unsaturated fatty acids in sausages containing GE. Moreover, the reformulation procedure presented a good potential for increasing n-3 content, while lowering atherogenicity index, thrombogenicity index, and n-6/n-3 ratios. Although the incorporated GE resulted in color and texture alterations, it was effective to improve the technological attributes in terms of emulsion stability and cooking behaviors. In GE added samples, oxidative stability of final products decreased; however sensory features were acceptable. Overall results pointed out that GE systems could be successfully conveyed to emulsified sausage formulations to ensure a healthier lipid profile with good technological and sensory quality.


Asunto(s)
Emulsiones/química , Sustitutos de Grasa , Productos de la Carne/análisis , Animales , Bovinos , Color , Culinaria , Ácidos Grasos/análisis , Manipulación de Alimentos/métodos , Aceite de Linaza , Aceite de Cacahuete
13.
Meat Sci ; 174: 108424, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33422772

RESUMEN

Bologna sausages were produced with 25, 50, 75 and 100% of their pork fat content replaced by monoglyceride based-oleogels prepared from conventional or high oleic sunflower oils. Physicochemical, technological, and sensory properties of Bologna sausages were evaluated. Emulsion stability was little affected by fat replacement. All treatments batters exhibited characteristic rheological properties of gels (G' > G″). Overall, the addition of oleogel as a fat substitute made the sausages lighter and a small increase in hardness was observed in the sausages with total fat replacement by oleogels. The sliceability was affected by the reformulation and a higher number of slices were obtained in samples with oleogels in relation to the control. These results were associated to the product structure that became more compact as the amount of pork fat was reduced. However, all samples showed good acceptance by the consumers and no significant difference was observed between treatments. The results showed that monostearate-based oleogel can be a potential fat replacer with higher amount of unsaturated fatty acids to be used in meat products, but retaining the desired characteristics of the traditional products.


Asunto(s)
Glicéridos/química , Productos de la Carne , Adulto , Animales , Comportamiento del Consumidor , Emulsiones , Sustitutos de Grasa , Ácidos Grasos/análisis , Femenino , Humanos , Masculino , Persona de Mediana Edad , Compuestos Orgánicos , Aceite de Girasol/química , Porcinos
14.
Food Sci Technol Int ; 27(8): 693-701, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33375846

RESUMEN

Psyllium is a natural fibre with high water absorption capacity and proved nutritional advantages. The aim of this study was to evaluate the potential of psyllium as a fat replacer in sugar-snap cookies. Elaborations were made with wheat flour or maize flour by maintaining the original recipe or replacing the fat by a paste made with different proportion of psyllium and water. Cookies dough rheology and final cookies properties were evaluated. An acceptability test was also carried out. The replacement of fat decreased the values of G', G″ and G*, but increased tg delta to a greater extent in cookies with gluten. Cookies diameter and spread factor decreased and increased both cookies hardness and moisture content. Fat replacement increase L* value of cookies. Variation of the water content did not influence in the rheology of the dough and in the characteristics of gluten-free cookies, but wheat cookies had smaller spread ratio and decreasing hardness for increasing amount of water. Final cookies had low acceptability and this result was more evident in gluten-free cookies. Considering this result, it is difficult to use psyllium as a total fat substitute in this type of product.


Asunto(s)
Sustitutos de Grasa , Psyllium , Pan , Harina , Triticum
15.
Carbohydr Polym ; 254: 117415, 2021 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-33357899

RESUMEN

Grapefruit peel nanofibrillated cellulose (GNFC) was used as fat substitute in ice cream. GNFC was characterized by TEM, SEM, and XRD. The effects of GNFC on textural profiles, rheological properties, melting resistance, sensory properties, microstructure, and gross energy (GE) of ice cream were investigated. The results showed that GNFC was short rod-shaped crystal. Ice cream added with GNFC exhibited elastic-dominated behavior and better textural properties. The sensory evaluation score reached the highest level with desirable three-dimensional network structure at 0.4 % GNFC addition. GE of ice cream significantly decreased with reducing fat with maximal reduction rate of 17.90 %. Furthermore, the results of in vitro simulated digestion showed that GNFC addition and fat reduction significantly inhibited fat digestibility of ice cream due to coalescence of fat droplets on GNFC. This study provides new sustainable perspectives for the application of GNFC prepared from agricultural waste as fat substitute in food products.


Asunto(s)
Celulosa/química , Citrus paradisi/química , Sustitutos de Grasa/química , Helados , Nanofibras/química , Nanopartículas/química , Extractos Vegetales/química , Celulosa/farmacología , Óxidos N-Cíclicos/química , Digestión/efectos de los fármacos , Elasticidad , Sustitutos de Grasa/farmacología , Ácidos Grasos no Esterificados/química , Manipulación de Alimentos/métodos , Congelación , Jugo Gástrico/química , Jugo Gástrico/efectos de los fármacos , Concentración de Iones de Hidrógeno , Leucina/química , Extractos Vegetales/farmacología , Reología/métodos , Gusto
16.
J Food Sci ; 85(10): 3072-3080, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32869333

RESUMEN

The addition of different amounts of a functional ingredient composed of water, inulin, chia seeds, and hemp or flaxseed oil was examined as butter replacer to improve the nutritional value of muffins. Nutritional, technological, and sensory characteristics of the reformulated products were assessed, as well as the stability under storage at room temperature. One control and six modified formulations with three levels of butter replacement (50%, 75%, and 100%) were analyzed. Modified muffins improved their nutritional profile, reducing up to 78% of fat and increasing fiber (up to 62.5%) and omega-3 fatty acids content (from 0.12 g/100 g of product to 0.62 g and 1.55 g in hemp and flaxseed oil samples, respectively). Sensory analysis revealed that flaxseed oil samples were indistinguishable from the control in all evaluated attributes, even in the highest level of replacement. During storage, texture of modified samples behaved similar to the control and no oxidation problems were observed in any of the formulations. Therefore, the functional ingredient proved to be a feasible alternative for replacing butter in muffins, preserving the quality attributes and making them healthier foods. PRACTICAL APPLICATION: Functional ingredients including fiber and low amounts of good-quality sources of fat have a simple manufacturing process, do not require heating, and perform well once incorporated to the matrix. They are versatile and could be incorporated in other bakery products to substitute butter or even oil, to obtain a reduced calorie product and with an enhanced nutritional profile and good sensory properties.


Asunto(s)
Cannabis/química , Sustitutos de Grasa/análisis , Lino/química , Inulina/análisis , Aceites de Plantas/análisis , Salvia/química , Pan/análisis , Mantequilla/análisis , Fibras de la Dieta/análisis , Aditivos Alimentarios/análisis , Manipulación de Alimentos , Humanos , Valor Nutritivo , Oxidación-Reducción , Semillas/química , Gusto
17.
J Food Sci ; 85(10): 3432-3441, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32918281

RESUMEN

Combination of oleogelators has recently started to receive scientific attention since single oleogelator may not adequately compensate for the diverse roles of solid fat in a complicated food system. In this study, grapeseed oil oleogels were prepared with candelilla wax (CDW) and glyceryl monostearate (GMS) blends at varying mass ratios (100:0, 75:25, 50:50, 25:75, and 0:100 [w/w]), and their physicochemical characteristics were characterized in terms of thermal, rheological, and microstructural properties. The oleogel with CDW and GMS at a blending ratio of 75 and 25 (CDW-75:GMS-25) exhibited the lowest melting point, implying a eutectic behavior. The CDW-75:GMS-25 oleogel also had a harder texture, greater viscoelasticity, and lower oiling-off characteristics that were highly attributed to its small crystals and dense structural network observed from phase-contrast microscopic images. When GMS from different vendors were examined for melting behavior and hardness of oleogels, it was found that the oleogel properties were highly dependent on the detailed composition of GMS. NMR study showed that the ternary system of CDW, glyceryl 1-monostearate, and glyceryl 1,3-distearate was responsible for the eutectic behavior of the CDW-75:GMS-25 oleogel. This study reports the unique and improved melting and physical properties of oleogels with the mixture of CDW and GMS, which can increase the feasibility of the oleogel technology in actual food products. However, caution should be taken in selecting the oleogelators because their detailed composition and properties can vary depending on sources and processing conditions. PRACTICAL APPLICATION: Increasing attention has been paid to the combination of oleogelators since single oleogelator may not adequately compensate for the diverse roles of solid fat in a complicated food system. This study showed new eutectic characteristics at a specific blending ratio of candelilla wax and glyceryl monostearate that could be positively correlated with the increased hardness, viscoelasticity, and oiling-off features. The results may encourage the food industry to utilize this binary oleogelator blend as an alternative to solid fat high in saturated fat by providing new functional properties.


Asunto(s)
Aceites de Plantas/química , Vitis/química , Sustitutos de Grasa/química , Manipulación de Alimentos , Glicéridos/química , Dureza , Calor , Compuestos Orgánicos/química , Reología , Semillas/química , Viscosidad
18.
J Agric Food Chem ; 68(35): 9368-9376, 2020 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-32700528

RESUMEN

Human milk fat substitute (HMFS) is a class of structured lipids widely used in infant formulas. Herein, HMFS was prepared by Rhodococcus opacus fermentation. The substrate oils suitable for HMFS production were coconut oil (66.1-57.5%), soybean oil (17.5-26.5%), high oleic acid sunflower oil (5.4-4.5%), Antarctic krill oil (9-9.5%), and fungal oil (2%). Six HMFSs were prepared, among which HMFS V and VI were similar to human milk fat from Chinese in terms of fatty acid composition and triacylglycerol species. The sn-2 position of HMFS was occupied by palmitic acid (49.31 and 43.48% in HMFS V and VI, respectively). The major triacylglycerols were OPL, OPO, and LPL, accounting for 15.90, 9.49, and 6.84 and 17.52, 8.44, and 8.55% in HMFS V and VI, respectively. This study is the first to prepare structured lipids intended for infant formula through fermentation, providing a novel strategy for the edible oil industry.


Asunto(s)
Sustitutos de Grasa/metabolismo , Ácidos Grasos/metabolismo , Leche Humana/metabolismo , Rhodococcus/metabolismo , Aceite de Coco/metabolismo , Medios de Cultivo/química , Medios de Cultivo/metabolismo , Sustitutos de Grasa/química , Ácidos Grasos/química , Fermentación , Humanos , Microbiología Industrial , Fórmulas Infantiles/análisis , Leche Humana/química , Rhodococcus/química , Aceite de Soja/metabolismo , Aceite de Girasol/metabolismo
19.
J Oleo Sci ; 69(8): 825-835, 2020 Aug 06.
Artículo en Inglés | MEDLINE | ID: mdl-32641606

RESUMEN

The development of human milk fat substitutes (HMFSs), rich in palmitic acid (16:0) at the sn-2 position of triacylglycerol (TAG) and rich in unsaturated fatty acids (FAs) (oleic acid, 18:1 and linoleic acid, 18:2) at the sn-1(3) positions, has gained popularity. In this study, HMFSs containing polyunsaturated fatty acids (PUFAs) predominantly at the sn-2 position were prepared, and their oxidation stabilities were compared. First, a non-PUFA-containing HMFS (NP-HMFS) was produced by enzymatic reactions using Novozyme® 435 and Lipozyme® RM-IM as the enzymes and lard as the raw material. Second, HMFSs, containing 10 % PUFA at the sn-2 or sn-1(3) position, were individually prepared by enzymatic reactions using lard and fish oil as raw materials. Here, sn-2-PUFA-monoacylglycerol (MAG) was extracted from the reaction solution using a mixture of hexane and ethanol/water (70:30, v/v) to produce high-purity sn-2-PUFA-MAG with 78.1 % yield. For the PUFA-containing HMFS substrates, comparable oxidation stability was confirmed by an auto-oxidation test. Finally, HMFSs containing 10 % or 2 % sn-1,3-18:1-sn-2-PUFA-TAG species were prepared by enzymatic reactions and subsequent physical blending. The oxidative stability of sn-1,3-18:1-sn-2-PUFA-HMFS was two-fold higher than that of 1/2/3-PUFA-HMFS in which each PUFA was located without stereospecific limitations in TAG. The removal of PUFA-TAG molecular species with higher concentrations of unsaturated units had a significant effect. In addition, the oxidation stability increased with the addition of tocopherol as an antioxidant. Thus, the combined use of two strategies, that is, the removal of PUFA-TAG molecular species with high concentrations of unsaturated units and the addition of antioxidants, would provide a PUFA-containing HMFS substrate with high oxidative stability.


Asunto(s)
Sustitutos de Grasa/química , Ácidos Grasos Insaturados/química , Ácidos Grasos Insaturados/aislamiento & purificación , Leche Humana , Triglicéridos/química , Triglicéridos/aislamiento & purificación , Antioxidantes , Grasas de la Dieta , Enzimas Inmovilizadas , Aceites de Pescado/química , Proteínas Fúngicas , Humanos , Ácido Linoleico , Lipasa/química , Ácido Oléico , Oxidación-Reducción , Ácido Palmítico , Tocoferoles
20.
Meat Sci ; 167: 108162, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32413691

RESUMEN

In the present study, incorporation of pre-emulsified hazelnut oil (HO) plus hazelnut powder (HP) into sausage formulations as beef fat substitutes was investigated. Totally nine different treatments were formulated where beef fat (BF) was replaced with 0%, 50%, or 100% pre-emulsified HO with the addition of 0%, 3%, or 6% HP. Although pre-emulsion containing sausages had a higher lipid amount than BF containing sausages, SFAs went down from 47.2% to 13.6% while MUFAs increased from 41.8% to 71.3%, and PUFAs increased from 3.7% to 11.23% in sausages where BF was totally replaced. HO pre-emulsions were effective to improve nutritional ratios (P:S, IA, and IT) by means of lipid modification. Generally, no significant differences were recorded in textural and sensory parameters. Oxidative and technological quality could be maintained by HP addition to sausages with HO pre-emulsions. Consequently, the utilization of pre-emulsified HO and HP presented a good opportunity for introducing healthier oils and protecting the overall quality of emulsified meat products.


Asunto(s)
Corylus , Sustitutos de Grasa/química , Productos de la Carne/análisis , Animales , Bovinos , Color , Emulsiones , Ácidos Grasos/análisis , Femenino , Manipulación de Alimentos , Humanos , Masculino , Nueces , Aceites de Plantas/química
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