scholarly journals Effects of three different diets on the fatty acid profile and sensory properties of fresh Pecorino cheese “Primo Sale”

2020 ◽  
Vol 33 (12) ◽  
pp. 1991-1998 ◽  
Author(s):  
Isa Fusaro ◽  
Melania Giammarco ◽  
Michael Odintsov Vaintrub ◽  
Matteo Chincarini ◽  
Anna Chiara Manetta ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Feeding Strategy ◽  
Vaccenic Acid ◽  
Control Diet ◽  
Saturated Fatty Acids ◽  
Sensory Properties ◽  
Control Group ◽  
Acid Ratio ◽  
Fresh Cheese

Objective: This study aimed to evaluate and compare the effects of three different diets on the fatty acids (FA) profile and sensory properties of a characteristic Italian fresh cheese: Pecorino "Primo Sale” (PS).Methods: Fifty-four sheep were divided into three feeding groups: total mixed ration (TMR) enriched with extruded linseed (TL), control diet with TMR without any integration (TC), and pasture (P). During cheese production, six cheeses per experimental group were produced each week, stored for 10 days at 4°C, and then analyzed for chemical composition, FA profile, and sensory properties.Results: Saturated fatty acids (SFA) were significantly higher in PS from group TC (82.11%) than in cheese from other two groups (P 75.48% and TL 66.83%). TL and P groups presented higher values of polyunsaturated fatty acids, 4.35 and 3.65%, respectively, than that of TC group (2.31%). The lowest SFA/unsaturated fatty acid ratio was found in TL and P groups, while the highest was found in the TC group. Vaccenic acid and conjugated linoleic acid (CLA) were higher in group P (p<0.05) than in groups L and TC. Sensory properties of cheese from group P received the highest scores for odor intensity and friability, while control group had a greater chewing consistency. Overall, all cheeses received good scores for acceptability.Conclusion: In conclusion, this study showed how the integration of extruded linseed improved the FA profile of fresh pecorino cheese PS preserving its sensory properties. Levels of CLA in the PS group achieved using this approach was not higher than that in a grazing diet. Cheeses from groups P and L contained a higher value of FA, with nutritional implications for humans, when compared with un-supplemented diet. Linseed may be a good feeding strategy when pasture is not available.

scholarly journals Effect of Dietary Grape Pomace and Seed on Ewe Milk and Meat Quality of Their Suckling Lambs

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
V. C. Resconi ◽  
M. Pascual-Alonso ◽  
L. Aguayo-Ulloa ◽  
G. C. Miranda-de la Lama ◽  
S. Alierta ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Milk Fat ◽  
Control Diet ◽  
Saturated Fatty Acids ◽  
Grape Seed ◽  
Grape Pomace ◽  
Control Group ◽  
By Products

The effect of wine by-products in the feeding of ewes on fatty acid composition of milk and meat of their suckling lambs and the sensory quality of the meat was investigated. Forty-two ewes were fed during the second half of gestation and lactation one out of three treatments: a control diet based on a commercial concentrate and two concentrates supplemented with either 10% grape pomace or 5% grape seed. In addition, all animals had ad libitum access of Lucerne chaff. The control group showed lower concentration of saturated fatty acids (mainly in short and medium chain) and higher monounsaturated fatty acids (mainly oleic acid) in the milk fat, being the total polyunsaturated fatty acids unchanged. However, this variation was not reflected in the meat of the suckling lambs, where only few differences in individual fatty acids were found, such as linoleic acid being highest in the pomace treatment. Spicy and metallic flavours were increased in the wine by-products groups, but overall liking was not affected. The by-products added to the diets may be a good way to reduce costs on feeding and waste, but they were not able to provide a healthier fatty acid profile, neither in milk nor in the meat of the suckling lambs.

scholarly journals Effect of Pork Meat Replacement by Fish Products on Fatty Acid Content, Physicochemical, and Sensory Properties of Pork Pâtés

2020 ◽  
Vol 11 (1) ◽  
pp. 188
Author(s):  
Piotr Skałecki ◽  
Agnieszka Kaliniak-Dziura ◽  
Piotr Domaradzki ◽  
Mariusz Florek ◽  
Ewa Poleszak ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Acid Content ◽  
Raw Materials ◽  
Fatty Acid Content ◽  
Calorific Value ◽  
Thiobarbituric Acid ◽  
Acid Value ◽  
Sensory Properties ◽  
Control Group

The aim of the study was to assess the influence of the addition of fish raw materials (roe or fish meat) on the quality and nutritional value of pork pâtés. The control group (n = 4) consisted of pork pâtés, I experimental group (n = 6) of pâtés with 20% addition of roe (perch and pike), and II group of pâtés with 20% addition of fish (perch and pike meat) (n = 6). The pâtés’ pH, color, and profiled texture analysis were instrumentally measured and water, protein, fat, ash, and fatty acid content were determined by reference methods. To assess the oxidative stability of lipids the measurement of peroxide number, thiobarbituric acid reactive substances and content of conjugated dienes and trienes was used. The degree of fat hydrolysis was determined on the basis of acid value. Sensory analysis was carried out using the scaling method, taking into account 12 unit quality characteristics. Products with roe and meat contained less fat (accordingly 15.9% and 14.1%) and showed lower calorific value (accordingly 225.6 and 208.6 kcal/100 g) compared to pork pâtés (20.2% of lipids, 267 kcal/100 g). Moreover, the addition of fish raw materials improved the index of nutritional quality for protein (from 3.2 to 3.9) and beneficially reduced the nutritional index for fat (from 2.2 to 1.9). Fish constituents modified, to a certain extent, the color, texture, and sensory properties of pâtés, while maintaining full acceptability in consumer assessment. The addition of fish roe significantly increased the healthful quality by improving the fatty acid profile of pâtés, in which the significantly highest content of n-3 fatty acids, including eicosapentaenoic and docosahexaenoic acids (accordingly 252.21, 43.17, and 107.94 mg/100 g product), as well the highest concentration of saturated branched chain fatty acids were determined (18.75 mg/100 g product).

Effects of flavonoids from Allium mongolicum Regel as a dietary additive on meat quality and composition of fatty acids related to flavor in lambs

2019 ◽  
Vol 99 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Wangjing Liu ◽  
He Ding ◽  
Khas Erdene ◽  
Renwei Chen ◽  
Qier Mu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Meat Quality ◽  
Control Diet ◽  
Saturated Fatty Acids ◽  
Basal Diet ◽  
Longissimus Dorsi ◽  
Longissimus Dorsi Muscle ◽  
Dorsi Muscle ◽  
Meat Flavor

Sixty male Small-tailed Han sheep (initial body weight: 42.5 ± 4.1 kg) were assigned randomly and averagely into four groups to evaluate effects of flavonoids extracted from Allium mongolicum Regel (AMR) on meat quality and composition of fatty acids related to flavor in longissimus dorsi muscle of lambs. Lambs of four groups were fed a basal control diet (C), and basal diet + three different amounts of flavonoids extracted from the AMR; those were 11 mg kg−1 (Flav 11), 22 mg kg−1 (Flav 22), or 33 mg kg−1 (Flav 33), respectively. Dressing percentage, loin eye area, cooking loss, and pressing loss were affected by treatments (P < 0.05). Percentage of intramuscular fat, the concentrations of eicosapentaenoic acid, C18:0, total saturated fatty acids, monounsaturated fatty acid, and 4-methyloctanoic acid in longissimus dorsi muscle were changed by treatments (P < 0.05). Addition of AMR to diet improved the meat quality and had favorable effects on fatty acid composition related to meat flavor in longissimus dorsi muscle.

Rumen biohydrogenation of n-3 polyunsaturated fatty acids and their effects on microbial efficiency and nutrient digestibility in sheep

2000 ◽  
Vol 135 (4) ◽  
pp. 419-428 ◽  
Author(s):  
A. M. WACHIRA ◽  
L. A. SINCLAIR ◽  
R. G. WILKINSON ◽  
K. HALLETT ◽  
M. ENSER ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fish Oil ◽  
Control Diet ◽  
Saturated Fatty Acids ◽  
Latin Square ◽  
Nutrient Digestibility ◽  
Microbial Efficiency ◽  
Dietary Treatments ◽  
Different Sources

The study examined the extent to which n-3 PUFA from different sources were biohydrogenated in the rumen and their effects on rumen microbial efficiency and whole tract nutrient digestibility. Four ruminally and duodenally cannulated wether lambs were used in a 4×4 Latin square design. Four iso-energetic and iso-nitrogenous diets based on dried grass were formulated to provide similar fat levels (60g/kg DM) from different sources; Megalac (palmitic acid: C16:0; Control), whole linseed (α-linolenic acid, C18:3n-3 ; Linseed) fish oil (eicosapentaenoic acid, C20:5n-3, EPA and docosahexaenoic acids C22:6n-3, DHA; Fish oil) and whole linseed plus fish oil providing equal amounts of oil (LinFish). Diets were offered at a rate of 1·2kg/day in 12 equal portions.Total fatty acid intake was similar on all diets whilst duodenal fatty acid flow varied between 101, 94, 87 and 90% of dietary intake for animals fed the Control, Linseed, Fish oil and Linfish diets respectively. Duodenal flow of C18:3 n-3 in animals fed the Linseed diet was twice that of animals fed the Control diet (P < 0·01) whilst animals fed the Fish oil diet had a significantly greater flow of EPA and DHA than those fed any of the other dietary treatments. Duodenal flow of trans C18:1 in animals fed the Linfish diet was significantly greater than that in animals fed either Linseed, Fish oil or Control diets (P < 0·001). Biohydrogenation of C18:3n-3 was 80 to 93% in all diets whilst that of C20:5n-3 and C22:6n-3 was 72 to 79% in diets that contained fish oil or linseed and fish oil. Apparent fatty acid digestibility (duodenum to rectum) tended to be greater for unsaturated than saturated fatty acids whilst whole tract fatty acid digestibility (mouth to rectum) was significantly greater in animals fed diets containing fish oil (P0·05). All dietary n-3 PUFA sources decreased microbial protein synthesis and efficiency when expressed as either gN/kg organic matter (OM) apparently or truly degraded in the rumen. Additionally, the inclusion of fish oil increased the proportion of propionate in the rumen whilst depressing the rumen digestibility of OM and fibre (P < 0·01), but had no significant effect on whole tract OM or fibre digestibility.

Plant-Based Diet, Serum Fatty Acid Profile, and Free Radicals in Postmenopausal Women: The Diet and Androgens (DIANA) Randomized Trial

2005 ◽  
Vol 20 (3) ◽  
pp. 169-176 ◽  
Author(s):  
C. Colombo ◽  
P. Muti ◽  
V. Pala ◽  
A. Cavalleri ◽  
E. Venturelli ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Free Radicals ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Dietary Intervention ◽  
Saturated Fatty Acids ◽  
Intervention Group ◽  
Control Group ◽  
Reactive Oxygen Metabolites ◽  
Serum Fatty Acid

High calorie and fat consumption and the production of free radicals are two major mechanistic pathways between diet and disease. In this study we evaluated the effect of a plant-based diet poor in animal fat and rich in (n-3) fatty acids on fatty acids of serum phospholipids and on the production of reactive oxygen metabolites (ROMs). One hundred and four healthy female postmenopausal volunteers were recruited and randomized to a dietary intervention or a control group. Dietary intervention included a program of food education and biweekly common meals for 18 weeks. When the intervention and control groups were compared, it was seen that dietary intervention resulted in a significant reduction of saturated fatty acids (-1.5%) and a significant increase in (n-3) fatty acids (+20.6%), in particular docosahexaenoic acid (+24.8%). We observed that arachidonic acid decreased (–7.7%), while (n-6) fatty acids did not, and the (n-3)/(n-6) polyunsaturated ratio increased significantly (+24.1%). As expected, ROMs decreased significantly in the intervention group (-6%). The results indicated that a plant-based diet can improve the serum fatty acid profile and decrease ROMs production. These results suggest that a plant-based diet may reduce the body's exposure to oxidative stress.

scholarly journals Dietary effects on muscle fatty acid composition of finished heifers

2002 ◽  
Vol 37 (1) ◽  
pp. 95-101 ◽  
Author(s):  
Regiane Gregório da Silva ◽  
Ivanor Nunes do Prado ◽  
Makoto Matsushita ◽  
Nilson Evelázio de Souza
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Acid Composition ◽  
Cottonseed Meal ◽  
Saturated Fatty Acids ◽  
Longissimus Muscle ◽  
Acid Ratio ◽  
Saturated Fatty Acid Ratio

The effects of diet on Longissimus muscle fatty acid composition was determined using 24 crossbred heifers of Simmental vs. Nelore and Limousin vs. Nelore. The experimental diets were: 1) corn and yeast (CY); 2) corn, cottonseed meal + meat and bones meal (CMB); 3) cassava hull and yeast (CHY); 4) cassava hull, cottonseed meal + meat and bones meal (CHMB). Feeding CHMB diets resulted in lower lipid and higher cholesterol contents (P<0.05) for both crosses. Most of the identified fatty acids were monounsaturated, and the highest percentage was found to oleic acid (C18:1w9), with values ranging from 32.54 to 46.42%. Among the saturated fatty acids the palmitic acid (C16:0) showed the highest percentage, with its contents ranging between 19.40 and 32.44%. The highest polyunsaturated/saturated fatty acid ratio was of 0.30, and the lowest was of 0.08. Feeding CY diets resulted in lower cholesterol and higher polyunsaturated fatty acid contents of the Longissimus muscle.

scholarly journals Chemical and fatty acid composition of milk from crossbred cows subjected to feed restriction

2019 ◽  
Vol 54 ◽  
Author(s):  
Deiyse Alves Silva ◽  
Vicente Ribeiro Rocha Júnior ◽  
José Reinaldo Mendes Ruas ◽  
Pedro Felipe Santana ◽  
Luana Alcântara Borges ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Chemical Composition ◽  
Saturated Fatty Acids ◽  
Fatty Acid Content ◽  
Monounsaturated Fatty Acids ◽  
Feed Restriction ◽  
Dry Extract ◽  
Acid Ratio

Abstract: The objective of this work was to evaluate the chemical composition and fatty acid profile of milk from F1 Holstein/Zebu cows in different lactation periods, when receiving different levels of dietary supply in percentage of body weight. Sixty cows were evaluated, with five levels of dietary supply and three lactation periods. The levels of dietary supply had no effect on the production of milk corrected to 3.5% fat (12.25 kg per day). There was also no effect of dietary supply levels, in the different lactation periods, on contents of fat (3.34%), protein (3.41%), lactose (4.60%), total solids (12.0%), defatted dry extract (8.80%), and urinary nitrogen (14.5 mg dL-1), nor on somatic cell count (89.98 mL-1). As the dietary supply level was reduced, the sum of saturated fatty acids in milk was decreased in up to 9.15% and that of monounsaturated fatty acids was increased in up to 25.28%. Feed restriction does not alter the chemical composition of milk, but improves its quality of fat by reducing saturated fatty acid content, increasing the concentration of monounsaturated and desirable fatty acids in up to 54%, and increasing the hypo- and hypercholesterolemic fatty acid ratio in up to 168.97%.

scholarly journals Milk fatty acid profile in cows as influenced by diet supplementation with rapeseed pomace and extruded full-fat soya in different feeding periods

2021 ◽  
Vol 90 (1) ◽  
pp. 27-34
Author(s):  
Kristina Musayeva ◽  
Antanas Sederevičius ◽  
Ingrida Monkevičienė ◽  
Judita Žymantienė ◽  
Vaidas Oberauskas ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Dairy Cows ◽  
Control Diet ◽  
Saturated Fatty Acids ◽  
Total Content ◽  
Control Group ◽  
Milk Fatty Acid ◽  
Feeding Period ◽  
Experimental Group

The aim of the study was to estimate the effect of rapeseed pomace and extruded full-fat soya in the diets of dairy cows on changes in the milk fatty acid (FA) profile. The experiment was carried out on 30 dairy cows and divided into two periods: the indoor feeding period and the grazing period. Control diet cows were fed the farm’s total mixed ration (TMR); cows of experimental group 1 (ES) cows were fed the farm’s TMR supplemented with extruded full-fat soya; cows of experimental group 2 (RP) were fed the farm’s TMR supplemented with rapeseed pomace. The total content of saturated fatty acids (SFAs) tended to be lower in the RP and ES groups than in the control group during both feeding periods. Our results suggest that supplementing diets with rapeseed and soybean products are both effective in improving the fatty acid proportion of desirable (hypocholesterolaemic) FAs, mainly oleic acid (18:1n-9), linoleic acid (18:2n-6) and conjugated linoleic acid (CLAcis9trans11). The study showed that during the indoor feeding period, the unsaturated fatty acid (UFA) contents were significantly higher in the ES group compared to the control group (P < 0.05). The nutritional value of milk from the feeding groups in which rations were supplemented with ES or RP was better due to a quartile reduction of the atherogenicity index (AI) and the significantly increased spreadability index (SI) of the butter manufactured during the indoor feeding period (P < 0.01).

Lipolysis and biohydrogenation of linoleic and linolenic acid in vitro: comparison of linseed products and grass

2003 ◽  
Vol 2003 ◽  
pp. 169-169 ◽  
Author(s):  
T. T. Chow ◽  
V. Fievez ◽  
K. Raes ◽  
D. Demeyer ◽  
S. de Smet
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Linolenic Acid ◽  
Acid Composition ◽  
Feeding Strategy ◽  
Saturated Fatty Acids ◽  
Physical Treatment ◽  
Nutritional Guidelines

With respect to human health, nutritional guidelines emphasise on increasing the ratio poly-unsaturated/saturated fatty acids (P/S) (> 0.7) and reducing the n-6/n-3 ratio (< 5). Beef is generally characterised by a low P/S ratio (0.1), while the n-6/n-3 ratio may vary between 2 and 10 depending on the feeding strategy. Hence, the provision of n-3 fatty acids by the diet is crucial for optimising the fatty acid composition of meat. However, PUFA are hydrolysed and subsequently hydrogenated in the rumen to more saturated fatty acids and intermediates that are absorbed from the intestinal tract and transported to the tissues. Lipolysis and hydrogenation may thus affect the meat fatty acid composition. For ruminants, important sources of linolenic acid (C18:3n-3) are linseed and fresh grass. Prior to use in animal nutrition, linseed needs physical treatment like extrusion or crushing. The aim of the present in vitro experiment was to study lipolysis and biohydrogenation of linoleic acid (C18:2n-6) and C18:3n-3 in fresh grass and extruded or crushed linseed products.

scholarly journals Factors influencing fatty acids in meat and the role of antioxidants in improving meat quality

1997 ◽  
Vol 78 (1) ◽  
pp. S49-S60 ◽  
Author(s):  
J. D. Wood ◽  
M. Enser
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Vitamin E ◽  
Polyunsaturated Fatty Acid ◽  
Saturated Fatty Acids ◽  
Fatty Acid Content ◽  
Chain Polyunsaturated Fatty Acid ◽  
Antioxidant Vitamin ◽  
Polyunsaturated Fatty Acid Content ◽  
Acid Ratio

Meat has been identified, often wrongly, as a food having a high fat content and an undesirable balance of fatty acids. In fact lean meat is very low in fat (20–50g/kg), pork and poultry have a favourable balance between polyunsaturated and saturated fatty acids (P:S) and grazing ruminants produce muscle with a desirable n–6:n–3 polyunsaturated fatty acid ratio. In all species, meat fatty acid composition can be changed via the diet, more easily in single-stomached pigs and poultry where the linoleic, α-linolenic and long-chain polyunsaturated fatty acid content responds quickly to raised dietary concentrations. Recent work in pigs has attempted to manipulate the n–6:n–3 ratio by feeding higher levels of α-linolenic acid (e.g. in rapeseed) or its products eicosapentaenoic acid (20:5) and docosahexaenoic acid (22:6) present in fish oils. In ruminants the challenge is to increase the P:S ratio whilst retaining values for n–6: n–3 found in cattle and sheep fed on forage diets. The saturating effect of the rumen can be overcome by feeding polyunsaturated fatty acids which are protected either chemically, by processing, or naturally e.g. within the seed coat. Some protection occurs when grain-based or grass-based diets are fed normally, leading to relatively more n–6 or n–3 fatty acids respectively. These produce different flavours in cooked meat due to the different oxidative changes occurring during storage and cooking. In pigs and poultry, high n–3 fatty acid concentrations in meat are associated with fishy flavours whose development can be prevented with high dietary (supranutritional) levels of the antioxidant vitamin E. In ruminants, supranutritional vitamin E delays the oxidative change of oxymyoglobin to brown metmyoglobin and may also influence the characteristic flavours of beef and lamb.

Sign in / Sign up

Export Citation Format

Share Document