scholarly journals Supercritical Fluid Chromatography with Photodiode Array Detection in the Determination of Fat-Soluble Vitamins in Hemp Seed Oil and Waste Fish Oil

Molecules ◽  
2018 ◽  
Vol 23 (5) ◽  
pp. 1131 ◽  
Author(s):  
Katarzyna Tyśkiewicz ◽  
Roman Gieysztor ◽  
Izabela Maziarczyk ◽  
Paweł Hodurek ◽  
Edward Rój ◽  
...  
Keyword(s):  
Fish Oil ◽  
Supercritical Fluid ◽  
Supercritical Fluid Chromatography ◽  
Seed Oil ◽  
Photodiode Array Detection ◽  
Hemp Seed ◽  
Photodiode Array ◽  
Array Detection ◽  
Fat Soluble Vitamins

Supercritical fluid chromatography with photodiode array detection for pesticide analysis in papaya and avocado samples

2015 ◽  
Vol 38 (7) ◽  
pp. 1240-1247 ◽  
Author(s):  
Norma S. Pano-Farias ◽  
Silvia G. Ceballos-Magaña ◽  
Jorge Gonzalez ◽  
José M. Jurado ◽  
Roberto Muñiz-Valencia
Keyword(s):  
Supercritical Fluid ◽  
Supercritical Fluid Chromatography ◽  
Pesticide Analysis ◽  
Photodiode Array Detection ◽  
Photodiode Array ◽  
Array Detection

Determination of gangliosides by high-performance liquid chromatography with photodiode-array detection

1992 ◽  
Vol 605 (2) ◽  
pp. 221-225 ◽  
Author(s):  
Marcello Previti ◽  
Francesco Dotta ◽  
Giuseppe Mario Pontieri ◽  
Umberto Di Mario ◽  
Luisa Lenti
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Photodiode Array Detection ◽  
Photodiode Array ◽  
Array Detection

scholarly journals Sugar Spectrum, Hydroxymethylfurfural and Diastase Activity in Honey: A Validated Approach as Indicator of Possible Adulteration

2020 ◽  
Vol 77 (2) ◽  
pp. 44
Author(s):  
Victoriţa BONTA ◽  
Daniel Severus DEZMIREAN ◽  
Liviu Alexandru MĂRGHITAŞ ◽  
Adriana Cristina URCAN ◽  
Otilia BOBIŞ
Keyword(s):  
Antimicrobial Properties ◽  
Honey Sample ◽  
Complex Matrix ◽  
Photodiode Array Detection ◽  
Physico Chemical ◽  
Photodiode Array ◽  
Array Detection ◽  
Biotechnological Processes ◽  
Refractive Index Detection

Honey is used for centuries both as nutrient and in medicine, being an exhaustless source of benefic factors for health and also for different biotechnological processes. This is a complex matrix which possesses antioxidant and antimicrobial properties due to its peroxidic activity and bioactive compounds. A fully validated approach for the determination of sugars, hydroxymethylfurfural content and diastase activity in honey samples were presented in accordance with the official methods from the International Honey Commission. Spectrophotometric method was used for diastazic activity determination and chromatographic determinations for HMF content (photodiode array detection) and sugars (refractive index detection). The limits of detection and quantification were calculated. Accuracy, precision and uncertainty were determined in the spectrophotometric and chromatographic techniques using the certified reference material. Diastase activity, sucrose content and hydroxymethylfurfural (HMF) content were easily differentiated and these parameters were used for indication of a possible adulteration of the honey. The present study confirms that, in order to have an authentic honey sample, diastazic activity must be above 8 DN (diastazic number) and HMF content less than 40 mg/kg. Sugar spectrum is different for every honey type. Consequently, physico-chemical analysis should be combined for the determination of authentic honey and proper labeling.

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