Determination of total phenolic content and antioxidant capacity of blueberries using Fourier transformed infrared (FT-IR) spectroscopy and Raman spectroscopy

2017 ◽  
Vol 11 (4) ◽  
pp. 1909-1918 ◽  
Author(s):  
Xiaozhen Zheng ◽  
Yaxi Hu ◽  
Elfi Anggreani ◽  
Xiaonan Lu
Keyword(s):  
Raman Spectroscopy ◽  
Ir Spectroscopy ◽  
Antioxidant Capacity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

scholarly journals Fourier Transform Infrared (FT-IR) Spectroscopy as a Possible Rapid Tool to Evaluate Abiotic Stress Effects on Pineapple By-Products

2019 ◽  
Vol 9 (19) ◽  
pp. 4141 ◽  
Author(s):  
Diana I. Santos ◽  
M. Joana Neiva Correia ◽  
Maria Margarida Mateus ◽  
Jorge A. Saraiva ◽  
António A. Vicente ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Abiotic Stress ◽  
Phenolic Compounds ◽  
Ir Spectroscopy ◽  
Antioxidant Capacity ◽  
Fourier Transform Infrared ◽  
Total Phenolic ◽  
Ft Ir ◽  
By Products ◽  
Ft Ir Spectroscopy

Fourier transform infrared (FT-IR) spectroscopy is a physicochemical technique based on the vibrations of a molecule energized by infrared radiation at a specific wavelength range. Abiotic stresses can induce the production of secondary metabolites, increasing bioactivity. The objectives of the study were to evaluate the impact of heat treatments on the bioactivity of pineapple by-products, and whether FT-IR analysis allows understanding of the changes imparted by abiotic stress. The by-products were treated at 30, 40, and 50 °C for 15 min, followed by storage at 5 ± 1 °C for 8 and 24 h. Lyophilized samples were characterized for total phenolic content and antioxidant capacity and analyzed by FT-IR. Thermal treatments at 50 °C reduced the content of phenolic compounds (21–24%) and antioxidant capacity (20–55%). Longer storage time (24 h) was advantageous for the shell samples, although this effect was not demonstrated for the core samples. The principal components analysis (PCA) model developed with the spectra of the pineapple shell samples showed that the samples were grouped according to their total phenolic compounds content. These results allow the conclusion to be drawn that FT-IR spectroscopy is a promising alternative to the conventional chemical analytical methodologies for phenolic and antioxidant contents if there are significant differences among samples.

Determination of total phenolic content and antioxidant capacity of onion (Allium cepa) and shallot (Allium oschaninii) using infrared spectroscopy

2011 ◽  
Vol 129 (2) ◽  
pp. 637-644 ◽  
Author(s):  
Xiaonan Lu ◽  
Jun Wang ◽  
Hamzah M. Al-Qadiri ◽  
Carolyn F. Ross ◽  
Joseph R. Powers ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Antioxidant Capacity ◽  
Allium Cepa ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic

scholarly journals Determination of antioxidative and enzymatic activity in green and red lettuce cultivars affected by microbiological fertilisers and seasons

2021 ◽  
pp. 101
Author(s):  
Milica Stojanović ◽  
Vuk Maksimović ◽  
Dragosav Mutavdžić ◽  
Ivana Petrović ◽  
Zorica Jovanović ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Quality Parameters ◽  
Total Phenolic ◽  
Fresh Weight ◽  
Total Carotenoids ◽  
Total Antioxidant

Lettuce is a worldwide grown leafy vegetable rich in phytochemicals which are essential in human diet. The aim of this study was to examine the effect of genotype, microbiological fertilisers and season on the rosette fresh weight and components of antioxidant activity. Six cultivars (green ‘Kiribati’, ‘Aleppo’, ‘Aquino’ and red ‘Murai’, ‘Carmesi’, ‘Gaugin’) were grown in a greenhouse experiment during three consecutive seasons (autumn, winter and spring) with application of microbiological fertilisers (EM Aktiv, Vital Tricho and their combination). Green cultivars showed higher fresh weight than red in spring and winter. Green cultivar ‘Aleppo’ showed the highest fresh weight in control during spring. Microbiological fertilisers led to increased fresh weight in autumn. Mainly, red cultivars showed higher quality parameters compared to green (total antioxidant capacity, total phenolic content, total carotenoids and POD activity). Red cultivar ‘Carmesi’ showed the highest total antioxidant capacity, total carotenoids, and total phenolic content in winter with combination of fertilisers, Vital Tricho, and in control. In spring, ‘Carmesi’ and ‘Gaugin’ showed the highest POD activity with Vital Tricho, and combination of fertilisers. The present study suggested that genotype, fertilisers and season jointly influenced quantity and quality parameters with emphasis on Vital Tricho, and/or combination of fertilisers.

Determination of Total Phenolic Compounds and Antioxidant Activity of Ethanolic Extracts of Propolis Using ATR–FT-IR Spectroscopy and Chemometrics

2018 ◽  
Vol 11 (7) ◽  
pp. 2013-2021 ◽  
Author(s):  
Cleidiane da Silva ◽  
Anaclara Prasniewski ◽  
Matheus A. Calegari ◽  
Vanderlei Aparecido de Lima ◽  
Tatiane L. C. Oldoni
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Ir Spectroscopy ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Ethanolic Extracts ◽  
Ft Ir ◽  
Ft Ir Spectroscopy
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