scholarly journals Effects of Adding Moringa oleifera Leaves Powder on the Nutritional Properties, Lipid Oxidation and Microbial Growth in Ground Beef during Cold Storage

2021 ◽  
Vol 11 (7) ◽  
pp. 2944
Author(s):  
Mpho Edward Mashau ◽  
Kgaogelo Edwin Ramatsetse ◽  
Shonisani Eugenia Ramashia
Keyword(s):  
Lipid Oxidation ◽  
Cold Storage ◽  
Moringa Oleifera ◽  
Microbial Growth ◽  
Ground Beef ◽  
Total Phenolic ◽  
Microbial Composition ◽  
Nutritional Properties ◽  
Cooking Properties ◽  
Moringa Oleifera Leaves

The utilisation of Moringa oleifera leaves powder (MOLP) to improve the nutritional properties and inhibit lipid oxidation and the proliferation of microorganisms in ground beef during cold storage was examined. The effects of 0.2, 0.4, 0.6, and 0.8% MOLP on the nutritional properties (proximate composition, total phenolic and total flavonoid content), thiobarbituric acid reactive substances (TBARS), microbial composition, physicochemical characteristics (pH value, colour attributes, and cooking properties), and sensory analysis of ground beef were investigated. The findings showed that ash, protein, polyphenolic compounds, pH, colour, and microbial growth increased significantly, while moisture, fat content, and TBARS decreased significantly, with an increase in the concentration of MOLP during cold storage. Moderate levels (0.2 and 0.4%) of MOLP did not affect the sensory attributes of stored ground beef. Evidently, MOLP can be utilised as a natural preservative in ground beef to improve the nutritional value and inhibit lipid oxidation.

scholarly journals Effect of Steam Blanching, Dehydration Temperature & Time, on the Sensory and Nutritional Properties of a Herbal Tea Developed from Moringa oleifera Leaves

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Yasara W. H. Wickramasinghe ◽  
Indira Wickramasinghe ◽  
Isuru Wijesekara
Keyword(s):  
Moringa Oleifera ◽  
Total Phenolic ◽  
Sri Lankan ◽  
Herbal Tea ◽  
Nutritional Properties ◽  
Phenolic Contents ◽  
Trained Panel ◽  
Two Samples ◽  
Moringa Oleifera Leaves ◽  
Dpph Scavenging

The core purpose of the current study is to explore the use of Moringa oleifera leaves, to produce a herbal tea with acceptable sensory properties and nutritional properties by utilizing the steam blanching technique, different dehydration temperatures and time, which can be accepted in the Sri Lankan market. Six sets of samples were prepared where temperature and time combinations were 55°C—6 h, 60°C—4.30 h, 65°C—3 h for the unblanched samples & 55°C—6 h, 60°C—5.30 h & 65°C—4 h for the steam blanched samples. These samples were evaluated, employing a trained panel of 5 tea tasters and a semi trained panel of 35 members. The sample code 706 (steam blanched, 65°C—4 h) was selected as the sample with best sensory attributes. The blanched and unblanched samples dried at 65°C were tested for their proximate, mineral, vitamin, antioxidant and phytochemical contents. The effects of steam blanching on these two samples were evaluated & compared. This study highlights that steam blanching significantly increased the carbohydrates, fat, Mn, Fe, vitamin A, vitamin E and the DPPH scavenging activity whereas steam blanching significantly reduced the protein, fiber, Na, K, Ca, Total phenolic contents and flavonoids content but vitamin C, Zn, Cu and Mg contents were unaffected by steam blanching.

scholarly journals Effects of Chitosan Coating with Green Tea Aqueous Extract on Lipid Oxidation and Microbial Growth in Pork Chops during Chilled Storage

Foods ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 766
Author(s):  
Eduardo Montaño-Sánchez ◽  
Brisa del Mar Torres-Martínez ◽  
Rey David Vargas-Sánchez ◽  
Nelson Huerta-Leidenz ◽  
Armida Sánchez-Escalante ◽  
...  
Keyword(s):  
Lipid Oxidation ◽  
Green Tea ◽  
Cold Storage ◽  
Microbial Growth ◽  
Radical Scavenging ◽  
Meat Products ◽  
Total Phenolic ◽  
Chitosan Coating ◽  
Quality Deterioration ◽  
Pork Samples

Lipid oxidation and microbial growth are the major causes of meat quality deterioration. Natural ingredients in meat products have been proposed as a strategy to prevent quality deterioration during cold storage. This study aimed to assess the effects of added chitosan coating, alone and in combination with green tea water extract (GTWE), on the quality of pork chops during prolonged cold storage. For evaluating oxidative and antimicrobial stabilities, 72 fresh pork samples were subjected to four treatments (n = 18 per treatment): T0 (non-coated chops without GTWE); T1 (chitosan-coated chops without GTWE); T2 (chitosan-coated chops plus 0.1% of GTWE); and T3 (chitosan-coated chops plus 0.5% of GTWE). Pork samples were stored at 0 °C and subjected to physicochemical evaluation (pH, colour, and lipid oxidation) and microbiological analyses (mesophilic and pyschrotrophic counts) at 0, 5, 10, 15, 20 and 25 days of storage. GTWE presented high total phenolic content (> 500 mg gallic acid equivalents/g); the incorporation of chitosan coatings increased (p < 0.05) free radical scavenging activity (FRSA, >90% of inhibition) and microbial growth inhibition (>50% for all tested pathogens), depending on the concentration. Further, GTWE inclusion in pork samples (T2 and T3) reduced (p < 0.05) pH, lipid oxidation and microbial counts, as well as colour loss in meat and bone throughout storage. Chitosan coating with GTWE could be used as an additive for the preservation of pork meat products.

scholarly journals The incorporation of Moringa oleifera leaves powder in mutton patties: Influence on nutritional value, technological quality, and sensory acceptability

2021 ◽  
Vol 6 (1) ◽  
pp. 738-748
Author(s):  
Geoffrey Tshifhiwa Khomola ◽  
Kgaogelo Edwin Ramatsetse ◽  
Shonisani Eugenia Ramashia ◽  
Mpho Edward Mashau
Keyword(s):  
Moringa Oleifera ◽  
Ph Value ◽  
Control Sample ◽  
Meat Products ◽  
Thiobarbituric Acid ◽  
Total Phenolic ◽  
Cooking Properties ◽  
Moringa Oleifera Leaves ◽  
Technological Quality ◽  
Cooking Yield

Abstract Meat is a highly nutritious food rich in protein, fat, vitamins, and minerals. Nevertheless, chemical reactions and microorganisms might affect the quality of nutritional constituent of meat products. This study investigated the influence of adding Moringa oleifera leaves powder (MOLP) on the nutritional, technological properties, and consumer acceptability of mutton patties. Four treatments of mutton patties with 0, 0.3, 0.6, and 0.9% of MOLP were produced. The prepared patties (raw and cooked) were evaluated for quality attributes such as proximate composition, total phenolic content (TPC), cooking properties (cooking yield and cooking loss), physical characteristics (colour and water holding capacity [WHC]), thiobarbituric acid reactive substances (TBARS), pH value, and sensory quality. The incorporation of MOLP into the mutton patties significantly increased (p < 0.05) protein, fat, ash contents, TPC, pH, WHC, and cooking yield. However, moisture content, TBARS, and colour decreased. Most sensory likability scores of patty samples with up to 0.3% of MOLP were comparable to those of the control sample. Evidently, the inclusion of 0.3% of MOLP produces mutton patties with high sensory desirability.

scholarly journals Green Synthesis of Encapsulated Copper Nanoparticles Using a Hydroalcoholic Extract of Moringa oleifera Leaves and Assessment of Their Antioxidant and Antimicrobial Activities

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 555 ◽  
Author(s):  
Prince Edwin Das ◽  
Imad A. Abu-Yousef ◽  
Amin F. Majdalawieh ◽  
Srinivasan Narasimhan ◽  
Palmiro Poltronieri
Keyword(s):  
Electron Microscopy ◽  
Green Synthesis ◽  
Copper Nanoparticles ◽  
Moringa Oleifera ◽  
Metallic Copper ◽  
Total Phenolic ◽  
Copper Sulphate Solution ◽  
Hydroalcoholic Extract ◽  
Moringa Oleifera Leaves ◽  
Anti Fungal

The synthesis of metal nanoparticles using plant extracts is a very promising method in green synthesis. The medicinal value of Moringa oleifera leaves and the antimicrobial activity of metallic copper were combined in the present study to synthesize copper nanoparticles having a desirable added-value inorganic material. The use of a hydroalcoholic extract of M. oleifera leaves for the green synthesis of copper nanoparticles is an attractive method as it leads to the production of harmless chemicals and reduces waste. The total phenolic content in the M. oleifera leaves extract was 23.0 ± 0.3 mg gallic acid equivalent/g of dried M. oleifera leaves powder. The M. oleifera leaves extract was treated with a copper sulphate solution. A color change from brown to black indicates the formation of copper nanoparticles. Characterization of the synthesized copper nanoparticles was performed using ultraviolet-visible light (UV-Vis) spectrophotometry, Fourier-transform infrared (FTIR) spectrometry, high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The synthesized copper nanoparticles have an amorphous nature and particle size of 35.8-49.2 nm. We demonstrate that the M. oleifera leaves extract and the synthesized copper nanoparticles display considerable antioxidant activity. Moreover, the M. oleifera leaves extract and the synthesized copper nanoparticles exert considerable anti-bacterial activity against Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, and Enterococcus faecalis (MIC values for the extract: 500, 250, 250, and 250 µg/mL; MIC values for the copper nanoparticles: 500, 500, 500, and 250 µg/mL, respectively). Similarly, the M. oleifera leaves extract and the synthesized copper nanoparticles exert relatively stronger anti-fungal activity against Aspergillus niger, Aspergillus flavus, Candida albicans, and Candida glabrata (MIC values for the extract: 62.5, 62.5, 125, and 250 µg/mL; MIC values for the copper nanoparticles: 125, 125, 62.5, and 31.2 µg/mL, respectively). Our study reveals that the green synthesis of copper nanoparticles using a hydroalcoholic extract of M. oleifera leaves was successful. In addition, the synthesized copper nanoparticles can be potentially employed in the treatment of various microbial infections due to their reported antioxidant, anti-bacterial, and anti-fungal activities.

scholarly journals The Chemical Composition of Egyptian Moringa Oleifera Grown in Different Agro-Ecological Regions

2018 ◽  
Vol 8 ◽  
pp. 1467-1475
Author(s):  
Samar Rhyem
Keyword(s):  
Chemical Composition ◽  
Sandy Soil ◽  
Moringa Oleifera ◽  
Ph Value ◽  
Chemical Constituents ◽  
Beta Carotene ◽  
Total Phenolic ◽  
Ecological Regions ◽  
Moringa Oleifera Leaves ◽  
Loam Soil

Moringa Oleifera plant is successfully grown in Egypt now their leaves are highly nutritious and can be eaten either fresh or cooked. Aim Evaluate chemical composition of Egyptian Moringa Oleifera leaves grown in different agro-ecological regions. Methods; Same age leaves were collected from private farm in Gharbiya governorate (loam soil) and from western dessert (sandy soil). Leaves were subjected to proximate, vitamin, minerals and antioxidants analysis. Results; soil types widely affect the results depending on the nutrients and ph value. Fresh leaves contain the highest moisture content and the lowest nutrients comparing to dried leaves. Moringa Oleifera grown in sandy soil had the highest content of ash, carbohydrate and minerals including; Ca, Zn, Na, K, Mg and Fe compared to which grown in loam soil. Vitamin C, beta carotene, total phenolic, total flavonoids, and total antioxidant capacity were higher in leaves cultivated from loam soil than sandy soil as  67.93, 1497, 58.9, 90.8 mg/g , 65% and 60.5, 1303.9, 50.4, 80.5mg/g, and 59% respectively. Variability in chemical composition is likely due to differences in soil, climate, and plant age. These relatively diverse chemical constituents may be responsible for the medicinal properties of Moringa Oleifera leaves

scholarly journals Nutritional, Antioxidant and Quality Acceptability of Smoothies Supplemented with Moringa Oleifera Leaves

2018 ◽  
Author(s):  
Taiwo Aderinola`
Keyword(s):  
Moringa Oleifera ◽  
Radical Scavenging ◽  
Control Sample ◽  
Mineral Elements ◽  
Quality Parameters ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Ferric Reducing Antioxidant Power ◽  
Moringa Oleifera Leaves ◽  
The Impact

This study evaluated the impact of the level of supplementation of Moringa oleifera leaves on the nutritional (proximate, mineral and vitamin content) as well as on the antioxidant capacities of smoothies made from a blend of pineapple, banana and apple. The beverage (smoothies) were supplemented with Moringa oleifera leaves at 1.5, 3.0 and 4.5% levels and evaluated for proximate, antioxidant (ferric reducing antioxidant power, FRAP and 2,2-Diphenyl-1-picryhydrazy, DPPH), mineral, vitamin, physicochemical and quality acceptability. The results showed that the moisture content of the beverage ranged between 49.24 – 78.62%, total ash: 1.01 – 9.71, crude fiber: 5.14 – 9.39%, crude fat: 0.72 – 1.86%, crude protein: 5.47 – 19.37% and carbohydrate: 3.65 – 16.99%. Calcium (12.03 -15.53) and potassium (17.22 -25.38) were the predominant mineral elements when compared to magnesium (1.51 – 3.05) mg/L. The vitamin contents ranged between 2.5 – 10.8 and 0.15 – 0.93 mg/L for vitamin C and E, respectively. Total phenolic contents ranged between 4.68 – 6.18 mg/ml while the total flavonoid contents ranged between 0.01 – 0.14 mg/ml. The radical scavenging abilities (DPPH) of the samples ranged between 16.05 – 88.77% while the ferric reducing antioxidant power (FRAP) ranged between 0.38 – 7.36 mg/ml. The brix values showed high sugar contents (15 – 18%) while the pH results showed that the sample was almost neutral at a range between 6.3 and 6.5. The overall quality (sensory) acceptability of the different quality parameters evaluated indicated that the control sample was more preferred. While supplementation with Moringa oleifera leaves significantly affected the sensory parameters, its addition nevertheless offers a potential avenue to obtain additional nutrients besides its improved antioxidative properties.

scholarly journals Lipid oxidation and antimicrobial activity of cooked beef patties as influenced by leaf extracts of “Cemba” (Albizia lebbeckoides [DC.] Benth)

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Hajrawati Hajrawati ◽  
Henny Nuraini ◽  
Irma Isnafia Arief ◽  
Dondin Sajuthi
Keyword(s):  
Lipid Oxidation ◽  
Antioxidant Capacity ◽  
Cold Storage ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Beef Patties ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Cemba (Albizia lebbeckoides [DC.] Benth.) leaf extract (CLE) was evaluated for some physical properties, antioxidant and antimicrobial activities incorporated into beef patties during cold storage. Four Formulation employed were control, butylated hydroxytoluene (BHT) 0.01, CLE 0.5, and CLE 1% (w/w). The variables measured were proximate composition, cooking parameters, pH, aw, WHC, color, total phenolic content, antioxidant capacity, DPPH scavenging activity, TBARS value, and microbial total. The data were analyzed using ANOVA one factor for proximate and cooking parameters, and ANOVA with factorial 4x5 for pH, aw, WHC, color, total phenolic content, antioxidant capacity, DPPH scavenging activity, TBARS value, and microbial total and continued with Tukey test. The results of the study showed that the addition of the CLE did not affect the proximate composition and cooking parameters of the patties. The cooked beef patties with 1% CLE showed significantly lower (P<0.05) for TBARS value, pH, bacterial total (mesophilic and psychrophilic) compared to 0.5% CLE and controls. The total phenolic content, antioxidant capacity, scavenging activity of CLE 1 % were significantly higher (P<0.05) than 0.5% CLE and controls during the cold storage period (0, 7, 14, 21, and 28 days). Addition of both 0.5 and 1% CLE in cooked beef patty reduced bacteria total. The addition of 1% CLE had equivalent to BHT 0.01% effect in retarding lipid oxidation. In conclusion, the CLE 1% was effective to retard lipid oxidation and inhibit bacteria growth of cooked beef patties.

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