Digitalia
Buscador Avanzado
Grasas y aceites

Grasas y aceites

  • Editor:
  • CSIC
  • Ejournal: Grasas y aceites
  • Lugar de publicación:  Madrid , España
  • ISSN: 0017-3495
  • Lugar de publicación:  Madrid , España
  • Año de publicación: 2022
  • Vol: 73
  • Nº: 1
  • Páginas: 175
  • e440.pdf
    • Oxidative stability of soybean and corn oils enriched with Pluchea quitoc hydroalcoholic extract
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Chemicals
        • 2.2. Plant material
        • 2.3. Preparation of hydroalcoholic extract
        • 2.4. Determination of the total phenolic content
        • 2.5. Evaluation of free radical scavenging activity
          • 2.5.1. DPPH assay
          • 2.5.2. ABTS assay
        • 2.6. HPLC analysis of P. quitoc extract
        • 2.7. Chromatographic analysis by GC-MS
        • 2.8. Preparation of P. quitoc extract - enriched soybean and corn oils
        • 2.9. Rancimat test
        • 2.10. Schaal oven test and evaluation of acid value
          • 2.10.1. Acid value
        • 2.11. Statistical analysis
      • 3. RESULTS AND DISCUSSION
        • 3.1. Characterization of the P. quitoc hydroethanolic extract
        • 3.2. Evaluation of the antioxidant activity of hydroethanolic extract
        • 3.3. Soybean and corn oils enriched with hydroalcoholic extract: Analysis of oxidative stability by
      • 4. CONCLUSIONS
      • 5. ACKNOWLEDGMENTS
      • 6. REFERENCES
  • e441.pdf
    • A comparative evaluation of chemical composition and antimicrobial activities of essential oils extr
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Plant materials and chemicals
        • 2.2. Extraction of essential oils
        • 2.3. Gas chromatography-mass spectrometry
        • 2.4. Antibacterial Activity
          • 2.4.1. Microbial strains
          • 2.4.2. Antimicrobial activity assay
        • 2.5. Data analysis
      • 3. RESULTS AND DISCUSSION
        • 3.1. Characterization of essential oils
        • 3.2. Principal component analysis of essential oils
          • 3.2.1. Correlation analysis of chemical constituents of CCPL essential oils from five different habi
          • 3.2.2. Principal component analysis of CCPL essential oils from five different habitats in China
          • 3.2.3. Cluster analysis of CCPL essential oil from five different habitats in China
        • 3.3. Antibacterial activity of essential oils
      • 4. CONCLUSIONS
      • 5. ACKNOWLEDGMENTS
      • 6. ETHICAL STATEMENTS
      • 7. CONFLICT OF INTEREST
      • 8. REFERENCES
  • e442.pdf
    • Antioxidant activity, polyphenolic composition and in vitro antibacterial and antifungal activities
      • 1. INTRODUCTİON
        • 1.1. Uses of tea seeds
      • 2. MATERIALS AND METHODS
        • 2.1. Sample collection and preparation
        • 2.2. Chemical and reagents
        • 2.3. Methodology
          • 2.3.1. Extraction of tea seed oil
          • 2.3.2. Extraction for catechin, polyphenols and antioxidant assay
        • 2.4. Empirical studies
          • 2.4.1. Determination of the polyphenolic composition and profiles of camellia oil of Camellia sinens
          • 2.4.2. Determination of polyphenol from tea seed oil
          • 2.4.3. Determination of total catechin and individual catechin fractions from tea seed oil
          • 2.4.4. Determination of the antioxidant activity of Camellia sinensis and Camellia oleifera seed oil
          • 2.4.5. Antioxidant activity assay
          • 2.4.6. In-vitro antibacterial and antifungal activities of C. sinensis, C. oleifera seed oil, eucaly
        • 2.5. Statistical Analysis
      • 3. RESULTS
        • 3.1. Polyphenolic composition and profiles of Camellia sinensis and Camellia oleifera seed oil. Cate
        • 3.2. Total polyphenol levels in tea seed oil
        • 3.3. Antioxidant activity of Camellia sinensis and Camellia oleifera seed oil
        • 3.4. Correlation between antioxidant activity, polyphenolic composition and profiles of Camellia sin
        • 3.5. Antibacterial activities of Camellia sinensis (TRFK 306, TRFK 301/5), C. oleifera, eucalyptus a
        • 3.6. Antifungal activity of Camellia sinensis (TRFK 306, TRFK 301/5), C. oleifera, eucalyptus and ol
        • 3.7. Correlation between antioxidant activity, polyphenolic composition, catechin fractions and inhi
      • 4. DISCUSSION
      • 5. CONCLUSIONS
      • ACKNOWLEDGEMENTS
      • CONFLICT OF INTEREST
      • REFERENCES
  • e443.pdf
    • Textural and rheological properties of soybean oil organogels structured with polyglycerol and propy
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Materials
        • 2.2. Preparation of organogels
        • 2.3. Visual appearance
        • 2.4. Thermal stability
        • 2.5. Instrumental color measurements
        • 2.6. Hardness (compression/extrusion)
        • 2.7. Microstructure
        • 2.8. Rheological properties: Flow curve
        • 2.9. Statistical analysis
      • 3. RESULTS AND DISCUSSION
        • 3.1. Visual appearance and thermal stability
        • 3.2. Color parameters
        • 3.3. Hardness
        • 3.4. Rheological properties: Flow curve
        • 3.5. Microstructure
      • 4. CONCLUSIONS
      • ACKNOWLEDGMENTS
      • REFERENCES
  • e444.pdf
    • Solvent-free synthesis of oleic acid-based wax esters using recyclable acidic deep eutectic solvent
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Materials
        • 2.2. Preparation of the deep eutectic solvents (DESs)
        • 2.3. Synthesis of wax esters
        • 2.4. Analytical methods
          • 2.4.1. Determination of wax esters
          • 2.4.2. Characterization of purified wax esters
        • 2.5. Recovery of DES catalyst
        • 2.6. Statistical analysis
      • 3. RESULTS AND DISCUSSION
        • 3.1. The composition of oleic acid
        • 3.2. Screening of DES catalysts
        • 3.3. Effect of reaction temperature
        • 3.4. Effect of the amount of DES catalyst
        • 3.5. Effect of reaction time
        • 3.6. Effect of molar ratio of oleic acid to cetyl alcohol
        • 3.7. Catalyst recovery
        • 3.8. Comparison of acidic catalysts
        • 3.9. Analysis and separation of cetyl oleate
        • 3.10. Preparation of different oleic acid-based wax esters
      • 4. CONCLUSIONS
      • ACKNOWLEDGMENTS
      • REFERENCES
  • e445.pdf
    • Physico-chemical characteristics and oxidative stability of oils from different Peruvian castor bean
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Castor bean seeds
        • 2.2. Oil extraction
        • 2.3. Oil characteristics
        • 2.4. Statistical analysis
      • 3. RESULTS AND DISCUSSION
        • 3.1. Seed characteristics
        • 3.2. Oil characteristics
          • 3.2.1 Color
          • 3.2.2. Physicochemical parameters
          • 3.2.3. Fatty acids
          • 3.2.4. Tocopherols
          • 3.2.5. Antioxidant capacity
          • 3.2.6. Oxidative stability index (OSI) and shelf-life
      • 4. CONCLUSIONS
      • ACKNOWLEDGEMENTS
      • REFERENCES
  • e446.pdf
    • The effects of electrical and ultrasonic pretreatments on the moisture, oil content, color, texture,
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Materials
        • 2.2. Moderate Electric Field (MEF)
        • 2.3. Blanching methods
        • 2.4. Frying methods
        • 2.5. Analytical methods
      • 3. RESULTS AND DISCUSSION
        • 3.1. Influence of moisture and oil contents after the frying process
        • 3.2. Changes in color properties
        • 3.3. Changes in the textural characteristics
        • 3.4. Evaluation of sensory properties
        • 3.5. Energy consumption
      • 4. CONCLUSIONS
      • REFERENCES
  • e447.pdf
    • Biodiesel production enhanced by ultrasound-assisted esterification and transesterification of inedi
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Materials
        • 2.2. Biodiesel production methods
          • 2.2.1. Esterification procedure
          • 2.2.2. Transesterification procedure
        • 2.3. Physicochemical constants of biodiesel
        • 2.4. Examination of biodiesel under optimal states
        • 2.5. Statistical analysis
      • 3. RESULTS
        • 3.1. Esterification yield
        • 3.2. Effects of UAT on biodiesel yield
          • 3.2.1. Ultrasound power level
          • 3.2.2. Methanol/oil mole ratio
          • 3.2.3. Catalyst concentration
          • 3.2.4. Reaction time
          • 3.2.5. Reaction temperature
        • 3.3. Biodiesel examination
        • 3.4. Comparison between UAT and TAT
          • 3.4.1. Weight of yield, purity, and final yield
          • 3.4.2. Physicochemical constants of biodiesel
          • 3.4.3. Energy consumption
      • 4. CONCLUSION
      • ACKNOWLEDGMENTS
      • REFERENCES
  • e448.pdf
    • Fatty acid composition of phospholipids and triacylglycerols in the flesh of the thick-lipped grey m
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Experimental material
        • 2.2. Lipid extraction
        • 2.3. Lipid class separation
        • 2.4 Analysis of fatty acids
        • 2.5 Calculation of indices and statistical analysis
      • 3. RESULTS
      • 4. DISCUSSION
      • 5. CONCLUSIONS
      • ACKNOWLEDGEMENT
      • REFERENCES
  • e449.pdf
    • Effect of tunisian pomegranate peel extract on the oxidative stability of corn oil under heating con
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Chemicals and reagents
        • 2.2. Plant sample preparation
        • 2.3. Phytochemical screening
        • 2.4. Application of PPE to corn oil
        • 2.5. Heating processes
        • 2.6. Oxidative stability evaluation
        • 2.7. Statistical analysis
      • 3. RESULTS AND DISCUSSION
        • 3.1. Phytochemical composition of PPE
        • 3.2. Physicochemical properties of the frying/heating oils
          • 3.2.1. Change in free fatty acid (FFA) contents
          • 3.2.2. Change in peroxide value
          • 3.2.3. Change in p-anisidine value
          • 3.2.4. Change in conjugated diene and triene contents
          • 3.2.5. Change in TOTOX value
          • 3.2.6. Change in phenolic composition
          • 3.2.7. DPPH radical scavenging activities of heated oils
          • 3.2.8. Principal components analysis
      • 4. CONCLUSION
      • ACKNOWLEDGMENTS
      • REFERENCES
  • e450.pdf
    • Investigation on chemical composition, antioxidant activity and SARS-CoV-2 nucleocapsid protein of e
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Plant Material
        • 2.2. Extraction Procedure
        • 2.3. Isolation of the essential oils
        • 2.4. Gas Chromatography (GC)
        • 2.5. Gas Chromatography/Mass spectrometry (GC/MS)
        • 2.6. Molecular Docking Study
        • 2.7. Quantitative Analysis by HPLC-TOF/MS
        • 2.8. DPPH radical-scavenging activity
      • 3. RESULTS and DISCUSSION
        • 3.1. Chemical composition of the fatty acids
        • 3.2. Chemical composition of the essential oil
        • 3.3. Identification and quantification of phenolic acids by HPLC-TOF/MS
        • 3.4. DPPH radical-scavenging Activity
        • 3.5. Docking Results
      • 4. CONCLUSIONS
      • ACKNOWLEDGMENTS
      • REFERENCES
  • e451.pdf
    • Ultrasound-assisted extraction of red mombin seed oil (Spondias purpurea L.): phenolic profile, fatt
      • 1. INTRODUCTION
      • 2. MATERIAL AND METHODS
        • 2.1. Standards and chemical reagents
        • 2.2. Red mombin seed preparation
        • 2.3. Ultrasound-assisted extraction (UAE) and experiment design
        • 2.4. Determination of extraction yield
        • 2.5. Characterization of red mombin seed cake and oil
        • 2.6. Cake extracts
        • 2.7. Extracts of the red mombin seed oil
        • 2.8. Antioxidant capacity
        • 2.9. Phenolic compound profiles in red mombin seed cake and oil
        • 2.10. Phenolic compound profiles
        • 2.11. Fatty acids profile
        • 2.12. Statistical analysis
      • 3. RESULTS AND DISCUSSIONS
        • 3.1. Effects of ultrasound-assisted extraction on red mombin seed oil yield
        • 3.2. RSM analysis
        • 3.3. Optimization of the conditions for red mombin seed oil extraction
        • 3.4. Phenolic compound and fatty acid profiles
        • 3.5. Physicochemical characterization of red mombin seed cake and oil
      • 4. CONCLUSIONS
      • ACKNOWLEDGMENT
      • DATA AVAILABILITY
      • REFERENCES
  • e452.pdf
    • Assessment of obtaining sunflower oil from enzymatic aqueous extraction using protease enzymes
      • 1. INTRODUCTION
      • 2. MATERIALS AND METHODS
        • 2.1. Materials
        • 2.2. Sunflower seeds preparation
        • 2.3. Enzymatic Aqueous Extraction
        • 2.4. Characterization of free oil
        • 2.5. Statistical analysis
      • 3. RESULTS AND DISCUSSION
        • 3.1. Free oil yield (FOY)
          • 3.1.1. Effect of temperature
          • 3.1.2. Effect of pH
          • 3.1.3. Effect of enzyme concentration
          • 3.1.4. Interaction of variables
          • 3.1.5. Maximization of FOY
          • 3.1.6. Influence of thermal pre-treatment of sunflower seeds
        • 3.2. Oil characterization
      • 4. CONCLUSIONS
      • ACKNOWLEDGMENTS
      • REFERENCES

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