scholarly journals A “Green” Extraction Protocol to Recover Red Pigments from Hot Capsicum Fruit

HortScience ◽  
2010 ◽  
Vol 45 (7) ◽  
pp. 1084-1087 ◽  
Author(s):  
Richard D. Richins ◽  
Laura Hernandez ◽  
Barry Dungan ◽  
Shane Hambly ◽  
F. Omar Holguin ◽  
...  
Keyword(s):  
Green Chemistry ◽  
Supercritical Fluid ◽  
Plant Pigments ◽  
Red Pigments ◽  
Toxic Compounds ◽  
Green Extraction ◽  
Efficient Extraction ◽  
Low Levels ◽  
Coloring Agents ◽  
Extracting Solvent

Plant pigments represent a source of non-toxic compounds that are used as food or cosmetic coloring agents. Red-fruited varieties of Capsicum annuum can be extracted to isolate the red-colored xanthophylls, capsanthin, and capsorubin. Common commercial processes for this extraction use hexane as the extracting solvent and mild or no heat varieties of Capsicum. In this report, we describe a process for efficient extraction of these red pigments using green chemistry: CO2 supercritical fluid extraction and trapping the pigments in ethanol. Furthermore, we demonstrate that this method can be performed on hot or pungent Capsicum fruit and the resulting pigment sample has very low levels of capsaicinoids, 1 to 2 ppm. This process then can reduce the use of hazardous solvents and expand the type of fruit that can be used for the extraction of red pigments.

scholarly journals Highly Efficient Extraction Procedures Based on Natural Deep Eutectic Solvents or Ionic Liquids for Determination of 20-Hydroxyecdysone in Spinach

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4736
Author(s):  
Sylwia Bajkacz ◽  
Kornelia Rusin ◽  
Anna Wolny ◽  
Jakub Adamek ◽  
Karol Erfurt ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Extraction Procedure ◽  
Deep Eutectic Solvents ◽  
Molar Ratio ◽  
Green Extraction ◽  
Natural Deep Eutectic Solvents ◽  
Efficient Extraction ◽  
Solid Liquid ◽  
Extraction Agent

A novel, efficient extraction procedure based on natural deep eutectic solvents (NADES) and ionic liquids (ILs) for determination of 20-hydroxyecdysone (20-E) in spinach has been developed. NADES, the first green extraction agent, with different hydrogen bond donors and acceptors are screened in order to determine extraction efficiencies. NADES consisting of lactic acid and levulinic acid at a molar ratio of 1:1 exhibits the highest yields. ILs, the second green extraction agent, with various cations and anions are also investigated, where [TEA] [OAc]·AcOH, χAcOH = 0.75 displays the highest recovery. Moreover, NADES-SLE and IL-SLE (SLE, solid-liquid extraction) parameters are investigated. Using the obtained optimized method, the recoveries of the target compound in spinach are above 93% and 88% for NADES-SLE and IL-SLE procedure, respectively. The methods display good linearity within the range of 0.5–30 μg/g and LODs of 0.17 µg/g. The proposed NADES-SLE-UHPLC-UV and IL-SLE-UHPLC-UV procedures can be applied to the analysis of 20-E in real spinach samples, making it a potentially promising technique for food matrix. The main advantage of this study is the superior efficiency of the new, green extraction solvents, which results in a significant reduction of extraction time and solvents as compared to those in the literature.

Photocatalysis in green chemistry and destruction of very toxic compounds

Catalysis ◽  
2011 ◽  
pp. 204-252 ◽  
Author(s):  
Vasile I. Parvulescu ◽  
Hermenegildo Garcia
Keyword(s):  
Green Chemistry ◽  
Toxic Compounds

scholarly journals Effect of Supercritical Fluid Extraction on the Reduction of Toxic Elements in Fish Oil Compared with Other Extraction Methods

2015 ◽  
Vol 78 (1) ◽  
pp. 172-179 ◽  
Author(s):  
PARVANEH HAJEB ◽  
JINAP SELAMAT ◽  
LEILI AFSAH-HEJRI ◽  
NOR AINY MAHYUDIN ◽  
SHAHRAM SHAKIBAZADEH ◽  
...  
Keyword(s):  
Fish Oil ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Toxic Elements ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Human Consumption ◽  
Fluid Extraction ◽  
High Quality ◽  
Low Levels

High-quality fish oil for human consumption requires low levels of toxic elements. The aim of this study was to compare different oil extraction methods to identify the most efficient method for extracting fish oil of high quality with the least contamination. The methods used in this study were Soxhlet extraction, enzymatic extraction, wet reduction, and supercritical fluid extraction. The results showed that toxic elements in fish oil could be reduced using supercritical CO2 at a modest temperature (60°C) and pressure (35 MPa) with little reduction in the oil yield. There were significant reductions in mercury (85 to 100%), cadmium (97 to 100%), and lead (100%) content of the fish oil extracted using the supercritical fluid extraction method. The fish oil extracted using conventional methods contained toxic elements at levels much higher than the accepted limits of 0.1 μg/g.

Occurrence of N-methyl-N-formylhydrazones in Mycelia of Gyromitra esculenta

1978 ◽  
Vol 33 (7-8) ◽  
pp. 472-474 ◽  
Author(s):  
Marjatta Raudaskoski ◽  
Heikki Pyysalo
Keyword(s):  
Toxic Compounds ◽  
Low Levels ◽  
Hydrazone Compound

Abstract N-methyl-N-formylhydrazones, the toxic compounds identified in the fruitbodies of the false morel Gyromitra esculenta, were also found in the mycelia grown from isolated ascospores. The amounts of acetaldehyde N-m ethyl-N-formylhydrazone, the main hydrazone compound of the false morel, varied significantly among the strains studied. Especially low levels occurred in some of the strains isolated from one fruitbody.

Green extraction of oil from Carum carvi seeds using bio‐based solvent and supercritical fluid: Evaluation of its antioxidant and anti‐inflammatory activities

2019 ◽  
Vol 31 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Soumaya Bourgou ◽  
Iness Bettaieb Rebey ◽  
Sarra Dakhlaoui ◽  
Kamel Msaada ◽  
Moufida Saidani Tounsi ◽  
...  
Keyword(s):  
Supercritical Fluid ◽  
Green Extraction ◽  
Carum Carvi ◽  
Anti Inflammatory

scholarly journals Comparison of extraction methods for the hypotensive drugs from Eucommia ulmoides

2010 ◽  
Vol 62 (3) ◽  
pp. 725-730
Author(s):  
Hui Cao
Keyword(s):  
Organic Solvent ◽  
Supercritical Fluid ◽  
Human Body ◽  
Large Scale ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Eucommia Ulmoides ◽  
Plant Materials ◽  
Ph Values ◽  
Efficient Extraction

Extraction methods using Soxhlet extraction (SE), enzyme-assisted aqueous extraction (EE), semi-bionic extraction (SBE) and supercritical fluid extraction (SFE) were evaluated for the yields of geniposidic acid (GPA) and geniposide (GPS) from the bark of Eucommia ulmoides. The results showed that the yields of GPA and GPS attained by EE and SBE were highest, respectively. Compared with various extraction methods for the extraction of GPA and GPS, the SBE was more efficient than other methods. There was no organic solvent used in SBE. The pH values of semi-bionic extraction were the same as in the human body. The results indicate that SBE can be used for large-scale and efficient extraction of GPA and GPS from plant materials. The time taken by SFE was longer than other methods, but the yields of GPA and GPS were the lowest. .

Supercritical Fluid and Ultrasound‐assisted Green Extraction Technologies for Catechin Recovery

2021 ◽  
Author(s):  
Sayantani Dutta ◽  
S. R. Priyadarshini ◽  
Jeyan A. Moses ◽  
C. Anandharamakrishnan
Keyword(s):  
Supercritical Fluid ◽  
Green Extraction ◽  
Ultrasound Assisted
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