scholarly journals Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa

2019 ◽  
Vol 22 ◽  
Author(s):  
Rania A. El-Shenody ◽  
Mohamed Ashour ◽  
Mohamed Mahmoud Essam Ghobara
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Chemical Composition ◽  
Food Industry ◽  
Essential Amino Acids ◽  
Omega 3 ◽  
Dictyota Dichotoma ◽  
Lipid Contents ◽  
Cosmetic Industry ◽  
Omega 6

Abstract Seaweeds have a growing number of successful applications in the food industry, medicine and in the cosmetic industry, which increases the importance of evaluating their chemical composition. In the present study, three common Egyptian seaweeds (Dictyota dichotoma, Turbinaria decurrens and Laurencia obtusa) were collected from the Red Sea coast, Suez, Egypt. The chemical profile of the three seaweeds was studied beside the antioxidant activity of their extracts. The results indicated that the amount of carbohydrate was greater than the protein and lipid contents in the three seaweeds, with a natural richness in minerals and antioxidants besides considerable amounts of monounsaturated and polyunsaturated fatty acids, including Omega-3 and Omega-6 fatty acids. All essential amino acids for human were found in the three seaweeds, with significant amounts of aspartic and glutamic acids. Furthermore, the results of the antioxidant activity assays were consistent with the antioxidant contents (phenols, flavonoids, alkaloids, vitamin C, carotenoids) of each seaweed. D. dichotoma was the most valuable seaweed of the three species studied, due to its relatively high protein content of 7.28 ± 0.25%, moderate carbohydrate content of 25.35 ± 0.32%, and highest pigment and antioxidant contents. In conclusion, these three seaweeds, especially Dictyota dichotoma, have an interesting chemical composition with a prospective nutritional and pharmaceutical value.

The Fatty Acids Composition and Antioxidant Activity of Walnut Cold Press Oil

2017 ◽  
Vol 68 (3) ◽  
pp. 507-509 ◽  
Author(s):  
Dana Copolovici ◽  
Simona Bungau ◽  
Rica Boscencu ◽  
Delia Mirela Tit ◽  
Lucian Copolovici
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Fatty Acids Composition ◽  
Omega 3 ◽  
Walnut Oil ◽  
Cold Press ◽  
Omega 6 ◽  
Very High

The fatty acids composition and antioxidant activity have been determinate for cold press walnut oil. It has been found that the total saturated fatty acids have been 8.8 % while poly unsaturated fatty acids have been 72.84 %. The ratio between omega-6 and omega-3 has been determined as 5.06 which could help in human healthy diet. On the same side, the antioxidant activity of the oil is very high at a level of 3.65 mmol L-1 and a ratio between lipophilic and hydrophilic fractions of 9.45.

scholarly journals Chemical Composition and Fatty Acids of Glodok Fish by High Thermal Processing

2014 ◽  
Vol 17 (2) ◽  
Author(s):  
Sri Purwaningsih ◽  
Ella Salamah ◽  
Reza Dewantoro
Keyword(s):  
Fatty Acids ◽  
Arachidonic Acid ◽  
Chemical Composition ◽  
Thermal Processing ◽  
Nutrient Content ◽  
Processing Method ◽  
Omega 3 ◽  
Fish Processing ◽  
High Nutrient ◽  
Omega 6

Glodok is an economically underrated fish with a high nutrient content. The research aims to study the changes on chemical composition, fatty acids, omega-6 and omega-3 ratio in glodok muscle after processing with different methods of boiling, steaming, and boiling with addition of salt (3%). The results showed that the treatment (boiling, steaming, and boiling with addition of salt) gives a significant effect (α=0.05) in water content, ash, lipid content, nervonat acid, linoleic acid, arachidonic acid, EPA, and DHA. The best processing method was steaming. The ratio of omega-3 and omega-6 in fresh glodok fish was 2,1:1, which is higher than WHO recommendation of 0,6:1,7.<br />Keywords: chemical composition, fatty acid, glodok fish, processing

scholarly journals Biochemical composition of some Echinodermata (Holothuroidea, Echinoidea) from the Red Sea, Egypt

2022 ◽  
Vol 82 ◽  
Author(s):  
H. O. Ahmed ◽  
A. Mahdy ◽  
S. A. M. Nasser ◽  
K. F. Abd El-Wakeil ◽  
A. H. Obuid-Allah ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Amino Acid ◽  
Red Sea ◽  
Biochemical Composition ◽  
Saturated Fatty Acids ◽  
Monounsaturated Fatty Acids ◽  
Essential Amino Acids ◽  
Omega 3 ◽  
Omega 6 ◽  
Holothuria Atra

Abstract In the present study, the biochemical composition of some Echinodermata (Holothuroidea, Echinoidea) from the Red Sea, Egypt was investigated. The results showed that the highest percentage of saturated fatty acids (SFA) was in Holothuria nobilis and the lowest percentage was recorded in Holothuria scabra. The highest percentage of monounsaturated fatty acids (MUFA) was recorded in Pearsonothuria graeffei while the lowest percentage was recorded in Holothuria atra. The highest percentage of polyunsaturated fatty acids (PUFA) was recorded in Holothuria nobilis and the lowest percentage was recorded in Holothuria atra. The highest percentage of omega-3 fatty acids was recorded in Stichopus hermanni however, the lowest percentage was recorded in Diadema setosum. The highest percentage of omega-6 fatty acids was recorded in Bohadschia vitiensis where, the lowest percentage was recorded in Holothuria atra. In addition, nonessential amino acid (NEAA) glycine were the highest in all species and serine was the lowest while Essential amino acid (EAA) arginine was the highest and cysteine was the lowest. All of the NEAA recorded highest concentrations in S. hermanni except proline. The recorded essential amino acids were histidine, isoleucine, phenylalanine, and leucine. The latter was high in Pearsonothuria graeffei. Tyrosine, valine, threonine, and arginine were high in Stichopus hermanni. The present study proved that sea cucumbers has great nutritional value.

Antioxidant activity of vegetable oils with different omega-6/omega-3 fatty acids ratio

2010 ◽  
Vol 4 (4) ◽  
pp. 366-371
Author(s):  
D. A. Guseva ◽  
N. N. Prozorovskaya ◽  
A. V. Shironin ◽  
M. A. Sanzhakov ◽  
N. M. Evteeva ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Vegetable Oils ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Omega 6

scholarly journals Determination of fatty acid composition and antioxidant activity in vegetable oils

Chemija ◽  
2021 ◽  
Vol 32 (1) ◽  
Author(s):  
Daiva Kazlauskienė ◽  
Giedrė Kasparavičienė ◽  
Palma Nenortienė ◽  
Mindaugas Marksa ◽  
Julija Jukilaitytė ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Vegetable Oils ◽  
Sesame Seed ◽  
Omega 3 ◽  
Hemp Seed ◽  
Spectrophotometric Methods ◽  
Study Results ◽  
Omega 6 ◽  
High Antioxidant Activity

Studies of the composition of vegetable oils are expedient in order to achieve quality product modelling. The goal of this research was to determine the composition of fatty acids using gas chromatography (GC) and antioxidant activity using DPPH and ABTS spectrophotometric methods. Analysed oils were castor seed, sunflower seed, sesame seed, fibrous hemp seed, black radish seed and olive oils. Different classes of fatty acids were determined: polyunsaturated, monounsaturated and saturated; omega-3, omega-6 and omega-9 acids and individual constituents. The study results showed that the dominant acids in all oils were oleic and linoleic fatty acids. The best ratio of omega-6 to omega-3 acids was found in fibrous hemp seed oil – 3:1. All analysed vegetable oils demonstrated a high antioxidant activity.

Technology and Formation Improvement of Consumer Properties of Cold Appetizers from a Silver Carp in the Roll Form

Food Industry ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 14-22
Author(s):  
Olesya Sergeevna ◽  
Adelya Bekesheva
Keyword(s):  
Fatty Acids ◽  
Food Industry ◽  
Raw Materials ◽  
Silver Carp ◽  
Essential Amino Acids ◽  
Development Stage ◽  
Roll Forming ◽  
Fish Gelatin ◽  
Organoleptic Characteristics ◽  
Food Value

At the present development stage of fish culinary production special significance has range expanding and technology improving for the following purposes: the available fish resources use; the organoleptic characteristics improvement and the nutritional value and competitiveness increase of products manufactured at the enterprises of the food industry. This study concerns the technology and the consumer properties formation improvement of cold appetizers from silver carp in the form of a roll. Unlike traditional the developed products consist of fillet of a bighead silver carp on a skin and an original stuff from egg, vegetables and mushrooms. The researchers conducted study using conventional and special methods. They recommended to introduce gelatin in a dry powdered at the stage of roll forming form in a recipe of the developed fish rolls. A man tested fish gelatin as anew consistency regulator of the developed products. The traditional and fish gelatin use allows to increase the yield of fish cold appetizers in the form of a roll by 8.0 %. When adding gelatin, there was an improvement in consistency and sensory perception of the product as a whole. The analysis results of biological value showed that the developed dishes, being an important additional source of protein and essential amino acids such as threonine, lysine, valine, may well improve the ration balance. The fatty acids ratio in fish rolls prepared according to new recipes is close to the ideal fat in the ratio of saturated, monounsaturated and polyunsaturated fatty acids (35:45:20) and is determined mainly by the composition of fatty acids in silver carp fat. The developed production will allow to expand the range of the food industry enterprises by cold fish appetizers of high quality and food value from available fish raw materials.

EFFECT OF GINGER, LEMURU FISH OIL SAPONIFICATION AND OLIVE OIL ON COMPOSITION FATTY ACID OF BEEF

2014 ◽  
Vol 4 (1) ◽  
pp. 31-39
Author(s):  
Siwitri Kadarsih
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fish Oil ◽  
Olive Oil ◽  
Rice Bran ◽  
Dry Matter ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Omega 3 ◽  
Omega 6

The objective was to get beef that contain unsaturated fatty acids (especially omega 3 and 6), so as to improve intelligence, physical health for those who consume. The study design using CRD with 3 treatments, each treatment used 4 Bali cattle aged approximately 1.5 years. Observations were made 8 weeks. Pasta mixed with ginger provided konsentrat. P1 (control); P2 (6% saponification lemuru fish oil, olive oil 1%; rice bran: 37.30%; corn: 62.70%; KLK: 7%, ginger paste: 100 g); P3 (lemuru fish oil saponification 8%, 2% olive oil; rice bran; 37.30; corn: 62.70%; KLK: 7%, ginger paste: 200 g). Konsentrat given in the morning as much as 1% of the weight of the cattle based on dry matter, while the grass given a minimum of 10% of the weight of livestock observation variables include: fatty acid composition of meat. Data the analyzies qualitative. The results of the study showed that the composition of saturated fatty acids in meat decreased and an increase in unsaturated fatty acids, namely linoleic acid (omega 6) and linolenic acid (omega 3), and deikosapenta deikosaheksa acid.Keywords : 

scholarly journals Variability in Macro- and Micronutrients of 15 Commercially Available Microalgae Powders

Marine Drugs ◽  
2021 ◽  
Vol 19 (6) ◽  
pp. 310
Author(s):  
Fabian Sandgruber ◽  
Annekathrin Gielsdorf ◽  
Anja C. Baur ◽  
Benjamin Schenz ◽  
Sandra Marie Müller ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dunaliella Salina ◽  
Haematococcus Pluvialis ◽  
Saturated Fatty Acids ◽  
Dry Weight ◽  
Chlorella Pyrenoidosa ◽  
Essential Amino Acids ◽  
Arthrospira Platensis ◽  
Omega 3 ◽  
Tetraselmis Chuii

The nutrient composition of 15 commercially available microalgae powders of Arthrospira platensis, Chlorella pyrenoidosa and vulgaris, Dunaliella salina, Haematococcus pluvialis, Tetraselmis chuii, and Aphanizomenon flos-aquae was analyzed. The Dunaliella salina powders were characterized by a high content of carbohydrates, saturated fatty acids (SFAs), omega-6-polyunsaturated fatty acids (n6-PUFAs), heavy metals, and α-tocopherol, whereas the protein amounts, essential amino acids (EAAs), omega-3-PUFAs (n3-PUFAs), vitamins, and minerals were low. In the powder of Haematococcus pluvialis, ten times higher amounts of carotenoids compared to all other analyzed powders were determined, yet it was low in vitamins D and E, protein, and EAAs, and the n6/n3-PUFAs ratio was comparably high. Vitamin B12, quantified as cobalamin, was below 0.02 mg/100 g dry weight (d.w.) in all studied powders. Based on our analysis, microalgae such as Aphanizomenon and Chlorella may contribute to an adequate intake of critical nutrients such as protein with a high content of EAAs, dietary fibers, n3-PUFAs, Ca, Fe, Mg, and Zn, as well as vitamin D and E. Yet, the nutritional value of Aphanizomenon flos-aquae was slightly decreased by high contents of SFAs. The present data show that microalgae are rich in valuable nutrients, but the macro- and micronutrient profiles differ strongly between and within species.

scholarly journals Anti-Platelet Properties of Apple Must/Skin Yeasts and of Their Fermented Apple Cider Products

Beverages ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 54
Author(s):  
Donal Moran ◽  
Mary Fleming ◽  
Eimear Daly ◽  
Natasha Gaughan ◽  
Ioannis Zabetakis ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Platelet Aggregation ◽  
Functional Properties ◽  
Human Platelet ◽  
Omega 3 ◽  
Apple Cider ◽  
Human Platelet Aggregation ◽  
Yeast Strains ◽  
Omega 6 ◽  
Anti Inflammatory

Alcoholic beverages like apple cider are considered functional beverages with several health benefits, when consumed in moderation, which are mainly attributed to their microbiota and the plethora of their bioactive compounds. Among them, bio-functional polar lipids (PL) have recently been found in apple cider, which despite low quantities, have exhibited strong anti-inflammatory and anti-platelet properties, while fermentation seems to affect the functionality of apple cider’s PL bioactives. The aim of the present study was to elaborate yeast strains isolated from the complex mixtures of apple surface and must yeasts for evaluating their effects on the anti-platelet functional properties of PL bioactives from their final fermented apple cider products. First, bio-functional PL were extracted and separated from the biomass of the different isolated apple surface/must yeast strains, and were further assessed for their anti-platelet potency against human platelet aggregation induced by the potent inflammatory and thrombotic mediator platelet-activating factor (PAF), or by a classic platelet agonist like adenosine diphopshate (ADP). Novel functional apple ciders were then produced from the fermentation of apple juice by elaborating the most bioactive and resilient yeast strains isolated from the apple must with optimum fermentation properties. PL bioactives extracted from these novel apple cider products were also further assessed for their anti-platelet properties against both the PAF and ADP pathways of human platelet aggregation. These novel cider products were found to contain PL bioactives with lower IC50 values (~40 μg) and thus increased anti-platelet potency against platelet aggregation induced by PAF and ADP. GC-MS analysis of the PL bioactives extracted from these novel apple ciders showed that apple cider PL bioactives are rich in monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA), such as the omega-6 linoleic acid (LA) and the omega-3 alpha linolenic acid (ALA), with favorably lower levels for their omega-6/omega-3 PUFA ratio, which further support the observed strong anti-platelet properties putative anti-inflammatory potency for the apple cider PL bioactives. However, further studies are needed in order to elucidate and fully characterize the apple yeast strains that can be utilized for increasing the anti-inflammatory, anti-platelet and cardioprotective functional properties of their fermented apple cider products.

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