scholarly journals Emulsifying and Antioxidant Properties of a Shrimp (Pandalus borealis) Hydrolysate Conjugated With Xylose or Dextran Through the Maillard Reaction by Dry-Heating in Mild Conditions

2014 ◽  
Vol 3 (3) ◽  
pp. 144 ◽  
Author(s):  
Nicolas Decourcelle ◽  
Claire Sabourin ◽  
Thierry Aubry ◽  
Fabienne Guerard

<p>Maillard Reaction (MR) was performed in ‘dry’ conditions at 50 °C for 48 h between native shrimp hydrolysate (HN) and xylose or dextran. Resulting emulsifying and antioxidant properties were assessed. HN was compared with a native sodium caseinate (CN) and its glycoconjugates, obtained in the same conditions. Compared to dextran, xylose resulted in significant browning after MR with HN or CN, but HN-xylose conjugates showed the most functional modifications. Increasing xylose/HN ratios led to significant molecular rearrangements in the peptide populations and intermediate aromatic compounds of the MR detected at 220 and 294 nm, respectively. Consequently, HN-xylose conjugates had higher reducing power than HN. Conversely, at 0.5% (w/w), a sharp increase in consistency index and apparent viscosity of emulsions after a 4-h ageing period was obtained with the lowest xylose/HN ratio. These results confirm that MR is a promising process for the production of new natural food ingredients from marine-derived protein sources.</p>

2021 ◽  
pp. 13-19
Author(s):  
Александр Львович Панасюк ◽  
Елена Ивановна Кузьмина ◽  
Олеся Сергеевна Егорова

В статье приведены аналитические данные о современном состоянии рынка натуральных пищевых ингредиентов в России и за рубежом. Отмечены тенденции увеличения потребительского спроса на органические товары и продукты, сделанные из натуральных ингредиентов, которые не только безвредны, но и полезны для здоровья человека. На сегодняшний день практически не существует пищевых продуктов, в составе которых отсутствуют красители. Известно, что натуральные пищевые красители в большинстве случаев не только безвредны, но и способны повышать пищевую и биологическую ценность окрашиваемого продукта. Антоцианы - одни из самых распространенных в природе пигментов. Они обладают антиоксидантными свойствами, капилляроукрепляющим действием, способностью останавливать провоспалительные медиаторы, предотвращать нейродегенеративные расстройства и связанную со старением потерю костной массы, оказывают благоприятное влияние на состояние сердечно-сосудистой системы человека. Самым распространенным источником антоцианов является темноокрашенное растительное сырье. Наибольшее количество антоцианов содержат плоды красного винограда, черноплодной рябины, черники, черной смородины, бузины, вишни, ежевики, малины и краснокочанной капусты. Плоды и ягоды, как сырье для промышленной переработки, используются для получения разнообразной продукции, в том числе различных типов вин, крепких напитков и соков, в процессе производства которых образуются вторичные сырьевые ресурсы. Выжимки, получаемые при производстве соков и винодельческой продукции из темноокрашенных плодов, богаты антоцианами и также могут служить ценным источником для получения красных пищевых красителей. Представлен обзор отечественных и зарубежных источников, содержащих сведения о современных методах экстракции красящих пигментов из антоциансодержащего растительного сырья и его отходов в пищевой промышленности. Отмечено, что производство натуральных красителей требует специального подхода, совершенствования технологий и производственных процессов. Поиск источников натуральных красителей, разработка новых технологий производства и совершенствование существующих являются актуальными направлениями исследований в этой области. The article provides analytical data on the current state of the market for natural food ingredients in Russia and abroad. The tendencies of an increase in consumer demand for organic goods and products made from natural ingredients, which are not only harmless, but also beneficial to human health, are noted. Today, there are practically no food products that do not contain colors. It is known that natural food colors are not only harmless in most cases, but also capable of increasing the nutritional and biological value of the clored product. Anthocyanins are one of the most common pigments in nature. They have antioxidant properties, a capillary-strengthening effect, the ability to stop pro-inflammatory mediators, prevent neurodegenerative disorders and bone loss associated with aging, and have a beneficial effect on the state of the human cardiovascular system. The most common source of anthocyanins is dark-colored plant materials. The largest number of anthocyanins is contained in the fruits of red grapes, chokeberry, blueberries, black currants, elderberries, cherries, blackberries, raspberries and red cabbage. Fruits and berries, as raw materials for industrial processing, are used to obtain a variety of products, including various types of wines, spirits and juices, in the production process of which secondary raw materials are formed. The pomace obtained in the production of juices and wine products from dark-colored fruits is rich in anthocyanins and can also serve as a valuable source for obtaining red food colors. A review of domestic and foreign sources containing information on modern methods of extraction of coloring pigments from anthocyanin-containing plant raw materials and its waste in the food industry is presented. It is noted that the production of natural colors requires a special approach, improvement of technologies and production processes. The search for sources of natural colors, the development of new production technologies and the improvement of existing ones are relevant areas of research in this area.


2018 ◽  
Vol 1 ◽  
Author(s):  
Julianne Stack ◽  
Aurélien V. Le Gouic ◽  
Paul R. Tobin ◽  
Freddy Guihéneuf ◽  
Dagmar B. Stengel ◽  
...  

Microalgae are a relatively underutilised source of valuable nutritional compounds and biochemicals. Their high protein contents make them an interesting target for the generation of bioactive peptides for the functional food industry. Here, the nitrogenous components of the red microalga Porphyridium purpureum and the diatom- Phaeodactylum tricornutum were quantified, and their SDS-PAGE profiles analysed. Proteinswere isolated from these species by solubilisation at alkaline pH followed by precipitation at acidic pH. The protein extracts were hydrolysed with the food-grade proteolytic preparations Alcalase 2.4 L and Flavourzyme 500 L. The P. purpureum and P. tricornutum hydrolysates were examined for their in vitroanti-diabetic and antioxidant properties. The microalgal-derived protein hydrolysates had dipeptidyl peptidase (DPP) IV inhibitory activity, with IC50 values of 2.28 ± 0.36 and 2.68 ± 0.19 mg/mL for P. purpureum and P. tricornutum, respectively. The oxygen radical absorbance capacity (ORAC) and ferric reducing power (FRAP) values were, respectively, 13.98 ± 0.97 and 478.94 ± 34.43 for P. purpureum, and 15.04 ± 0.54 and 155.74 ± 38.30 for P. tricornutum expressed in μmol Trolox Equivalent (TE) per gram of dry matter.The results suggest that protein hydrolysates from these microalgae have potential use as functional food ingredients.


Author(s):  
Małgorzata Dula ◽  
Jan Matras ◽  
Eugeniusz R. Grela ◽  
Ignacy Niedziółka

Many component contained in the plants we usually eat are characterized by antioxidant properties, for example polyphenols effectively neutralize free radicals and other reactive oxygen species. The antioxidant potential of some herbal plants is many times higher than that of fruits and vegetables and therefore there has been a growing interest in the active substances contained therein. An improper diet, such as the one rich in lipids, adversely affects the level of free radicals in the body; so it is very important to choose to eat foods with a high antioxidant potential. The oxidation reactions that occur in food products have a detrimental impact on their nutritional value and sensory properties, such as taste, smell, color and texture. Antioxidants added to food can effectively counteract those changes, therefore there are sought natural food ingredients with antioxidant properties to replace synthetic antioxidants, such as BHA, BHT, which are often used in food. Some herbal spices have an anti-inflammatory and antibacterial effect. Moreover, they can stimulate appetite, increase the secretion of digestive juices and improve the absorption of nutrients. A diet enriched with suitable herbs or preparations obtained from them, mainly owing to the antioxidants contained therein, improves the functioning of the organism and prevents the development of certain diseases, such as cancer or atherosclerosis of blood vessels.


Author(s):  
Imane Rihab Mami ◽  
Noria Merad-Boussalah ◽  
Mohammed El Amine Dib ◽  
Boufeldja Tabti ◽  
Jean Costa ◽  
...  

Aim and Objective: Oxidative stress is implicated in the development and progression of many disease. Some of appropriate actions that could be initiated to taken to resolve the problem of these diseases are search for new antioxidant substances isolated from plants. The aims of this study were to study the intraspecies variations of A. verticillata and C. caeruleus essential oils from 8 locations using statistical analysis, the in vitro antioxidant properties of collective essential oils and in combinations. Materials and Methods: The essential oils were analyzed by GC and GC-MS. The intraspecies variations of the essential oil compositions were discussed using principal component analysis (PCA) and cluster analysis (CA). The antioxidant properties were evaluated DPPH-radical scavenging activity and β-carotene bleaching test. Results: The main components of Ammoides verticillata collective essential oil (Coll EO) were thymol (30.5%), carvacrol (23.2%), p-cymene (13.1%), limonene (12.5%) and terpinene-4-ol (12.3%). While roots of Carthamus caeruleus essential oil were dominated by carline oxide (86.2%). The chemical variability allowed the discrimination of two main Groups for both Coll EOs. A direct correlation between the altitudes, climate and the chemical compositions was evidenced. Ammoides verticulata and Carthamus caeruleus Coll Eos showed good antioxidant activity. In binary mixture, the interaction both Coll Eos and between oils rich of thymol and/or carvacrol with carlina oxide produced the best synergistic effects, compared to individual essential oils and the synthetic antioxidant (BHT). Conclusion: Ammoides verticillata and Carthamus caeruleus essential oil blends can be used as a natural food preservative and alternative to chemical antioxidants.


2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Praneetha Pallerla ◽  
Narsimha Reddy Yellu ◽  
Ravi Kumar Bobbala

Abstract Background The objective of the study is to evaluate the hepatoprotective activity of methanolic extract fractions of Lindernia ciliata (LC) and development of qualitative analytical profile of the bioactive fraction using HPLC fingerprinting analysis. All the fractions of methanolic extract of Lindernia ciliata (LCME) are assessed for their total phenolic, flavonoid contents and in vitro antioxidant properties by using DPPH, superoxide, nitric oxide, hydroxyl radical scavenging activities and reducing power assay. Acute toxicity study was conducted for all the fractions and the two test doses 50 and 100 mg/kg were selected for the hepatoprotective study. Liver damage was induced in different groups of rats by administering 3 g/kg.b.w.p.o. paracetamol and the effect of fractions were tested for hepatoprotective potential by evaluating serum biochemical parameters and histology of liver of rats. The effective fraction was evaluated for its antihepatotoxic activity against D-Galactosamine (400 mg/kg b.w. i.p.) and in vivo antioxidant parameters viz., Glutathione (GSH), Melondialdehyde (MDA) and Catalase (CAT) levels are estimated using liver homogenate. Results Among all the fractions, butanone fraction of LCME, (BNF-LCME) has shown better hepatoprotective activity and hence it is selected to evaluate the antihepatotoxicity against D-GaIN. The activity of BNF-LCME is well supported in in vitro and in vivo antioxidant studies and may be attributed to flavonoidal, phenolic compounds present in the fraction. Hence, BNF-LCME was subjected to the development of qualitative analytical profile using HPLC finger printing analysis. Conclusions All the fractions of LCME exhibited significant hepatoprotective activity and BNF-LCME (50 mg/kg) was identified as the most effective fraction.


Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1586
Author(s):  
Jessika N. Humerez-Flores ◽  
Sarah H. E. Verkempinck ◽  
Clare Kyomugasho ◽  
Paula Moldenaers ◽  
Ann M. Van Loey ◽  
...  

In the context of the increasing interest in natural food ingredients, the emulsifying and emulsion-stabilizing properties of three rhamnogalacturonan-rich apple pectin-derived samples were assessed by evaluating a range of physicochemical properties. An apple pectin (AP74) was structurally modified by a β-eliminative reaction to obtain a RG-I-rich pectin sample (AP-RG). Subsequent acid hydrolysis of AP-RG led to the generation of pectin material with partially removed side chains (in particular arabinose depleted) (AP-RG-hydrolyzed), thus exhibiting differences in rhamnose, arabinose, and galactose in comparison to AP-RG. All samples exhibited surface activity to some extent, especially under acidic conditions (pH 2.5). Furthermore, the viscosity of the samples was assessed in relation to their emulsion-stabilizing properties. In a stability study, it was observed that the non-degraded AP74 sample at pH 2.5 exhibited the best performance among all the apple pectin-derived samples evaluated. This emulsion presented relatively small oil droplets upon emulsion production and was less prone to creaming than the emulsions stabilized by the (lower molecular weight) RG-I-rich materials. The AP-RG and AP-RG-hydrolyzed samples presented a slightly better emulsion stability at pH 6.0 than at pH 2.5. Yet, neither pectin sample was considered having good emulsifying and emulsion-stabilizing properties, indicated by the presence of coalesced and flocculated oil droplets.


Heliyon ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. e07094
Author(s):  
Chalermkwan Somjai ◽  
Thanyaporn Siriwoharn ◽  
Kanokwan Kulprachakarn ◽  
Supakit Chaipoot ◽  
Rewat Phongphisutthinant ◽  
...  

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Vijayakumar Sundaram ◽  
Selvaraju Sadhasivam ◽  
Sivaraj Chandrasekaran ◽  
Raaman Nanjian ◽  
Arjun Pandian

Abstract Background Strobilanthes heyneanus (Nilgirianthus heyneanus) belongs to the family Acanthaceae that contains many species with potential for diverse medicinal uses. It is also called ‘Karun kurinji’ and is commonly found in the South-West regions of India. The species are commonly used in rheumatic complaints, sprain of the ankle, and hernia. The objectives of the study were to evaluate the antioxidant activity, phytochemical analysis, and antibacterial activities of the root extract of S. heyneanus. Results The radical scavenging and reduction assays such as DPPH● radical and OH● radical scavenging assays, as well as phosphomolybdenum reduction and Fe3+ reducing power assays, were determined for the root extract. The highest DPPH● radical scavenging activity was 88.23 ± 1.32 at 120 μg/mL concentration, and the calculated IC50 was 38.52 μg/mL concentration. The highest OH● radical scavenging activity was 51.28 ± 1.06 at 120 μg/mL concentration, and the calculated IC50 was 51.28 μg/mL concentration. The highest ABTS●+ radical scavenging activity was 91.28 ± 1.12 at 30 μg/mL concentration, and the calculated IC50 was 33.92 μg/mL concentration. The highest phosphomolybdenum reduction was 87.43 ± 0.90 at 120 μg/mL concentration, and the calculated RC50 was 24.74 μg/mL concentration. The highest Fe3+ reduction was 89.38 ± 0.98 at 120 μg/mL concentration, and the calculated RC50 was 31.06 μg/mL concentration. The antibacterial activity of S. heyneanus showed the highest zone of inhibition of 24 mm for Salmonella typhi with 500 μg/mL concentration. The cytotoxicity limits of the root extracts were tested by MTT assay using human dermal fibroblast cell lines, reflecting > 90% cell viability at a concentration of 500 μg/mL. Conclusions The current study showed that the root extract of S. heyneanus has better antioxidant properties and potential anti-bacterial compounds. The phytochemical analysis of the root extract showed the presence of alkaloids, steroids, terpenoids, phenols, flavonoids, tannins, saponins, glycosides, and carbohydrates, which are responsible for the antibacterial root extract of S. heyneanus synergistically.


Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 795
Author(s):  
Mohamed D. Bouzaida ◽  
Virginia C. Resconi ◽  
David Gimeno ◽  
Jakeline V. Romero ◽  
Juan B. Calanche ◽  
...  

The use of agroindustry by-products in animal diets allows the use of residues that are not fit for human consumption. In this study, it was investigated whether fattening commercial rabbits during 30 days with a non-medicated feed, with 20% addition of grape pomace (GPD), affected production traits and the fatty acid composition, antioxidants properties, and the shelf life of the meat compared to a conventional strategy (CON). Furthermore, it was tested, by chromatographic analysis, whether this alternative diet allowed the transfer of phenolic compounds to the meat. Thirty-six weaned rabbits were allotted to the two treatments. In each treatment, 18 rabbits were fattened in three indoor cages, each housing three males and three female rabbits. No significant differences were found in live weights (p > 0.05), but the feed conversion rate and carcass weight and yield were found to be impaired in the GPD group (p ≤ 0.05). The GPD group had a higher intramuscular fat percentage (2.01 vs. 1.54), improved polyunsaturated/saturated fatty acids ratio (0.75 vs. 0.66), and better atherogenicity (0.71 vs. 0.83) and thrombogenicity (1.14 vs. 1.24) indexes, while the n-6/n-3 ratio was higher (25.4 vs. 20.3). Total volatile basic nitrogen in meat was lower in the GPD group (p = 0.01), suggesting a delayed spoilage. However, no improvements in total phenolic content, antioxidant capacity, reducing power, and lipid oxidation (p > 0.05) were found in the meat. Even though the GPD pellets offered to the animals had several grape-derived phenolic compounds, and higher antioxidant properties compared to the CON diet, none of the phenolic compounds detected in feeds were detected in the meat samples.


Author(s):  
Fei-Hong Zhai ◽  
Yan-Fei Chen ◽  
Yong Zhang ◽  
Wen-Jing Zhao ◽  
Jian-Rong Han

Abstract Solid-state fermentation with Agaricus brasiliensis and Agaricus bisporus on whole grain wheat was carried out. Phenolic compounds and antioxidant properties of fermented wheat were determined. The results showed that the maximum values of polyphenols contents in wheat fermented with A. brasiliensis and A. bisporus reached respectively (3.16 ± 0.21) and (3.93 ± 0.23) mg GAE/g, which were 2.90 and 3.61 times of unfermented control. By employing ultra performance liquid chromatography coupled to mass spectrometry (UPLC-MS), 18 kinds of phenolic compounds were identified from fermented wheat. Compared with control, only 4-hydroxy-benzaldehyde was the same compound. It indicated that fermentation with the two fungi changed polyphenols contents and phenolic compounds composition in wheat to a great extent. Among these phenolic compounds, except for 4-hydroxy-benzaldehyde, 4-hydroxy-benzoic acid and β-N-(γ-glutamyl)-4-formylphenylhydrazine, other 15 kinds of phenolic compounds were first identified from mushroom samples (including fruit bodies, mycelia and fermentation products). DPPH radical scavenging capacity, reducing power, ferrous ion chelating ability and inhibition of lipid peroxidation of fermented wheat were significantly stronger than control (P &lt; 0.05).


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