Evaluation of physicochemical procedures for pigment extraction from mixed microalgal consortium

2021 ◽  
pp. 100775
Author(s):  
Arush Jain ◽  
Bunushree Behera ◽  
Balasubramanian Paramasivan
Keyword(s):  
Pigment Extraction

Extraction Process of Amaranthine Pigment Keeping the Water Wax Fuit Biological Active

2013 ◽  
Vol 295-298 ◽  
pp. 150-154
Author(s):  
Feng Jie Wang ◽  
Xin Qiao Dong ◽  
Xiao Liu
Keyword(s):  
Citric Acid ◽  
Extraction Method ◽  
Raw Materials ◽  
Extraction Process ◽  
Extraction Yield ◽  
Extraction Temperature ◽  
Natural Pigment ◽  
Pigment Extraction ◽  
Acid Aqueous Solution ◽  
The Stability

Development natural pigment retained a variety of nutrition composition is extremely research value.Water Wax Trees Fruit was as raw materials,citric acid aqueous solution was as extracting agent.Amaranthine pigment extraction method were studied on fully grasping the stability of the natural amaranthine pigment and no damage to the water wax fruit biological activity.The effect of extraction yield were studied on Water Wax Trees Fruit natural amaranthine pigment.The results show that the better extraction conditions are extraction temperature at 70 °C, extraction time for 3h,citric acid concentration1.0 % , the material/liquid ration(g/ml) 1:5.The extraction yield is 2.95%.Ultraviolet absorption maximum wavelength is 280 nm.

scholarly journals EXPLOITATION OF AGRI-FOOD SOLID WASTES FOR RECOVERY OF HIGH ADDED-VALUE COMPOUNDS: THE CASE OF GRAPE POMACE AND ONION PEELS

1970 ◽  
Vol 62 ◽  
Author(s):  
Papagiotis Kefalas ◽  
D. P. Makris
Keyword(s):  
Raw Materials ◽  
Reducing Power ◽  
Grape Pomace ◽  
Solid Wastes ◽  
Added Value ◽  
Waste Materials ◽  
Processing Plant ◽  
Food Ingredients ◽  
Pigment Extraction ◽  
Red Grape

Large quantities of both liquid and solid wastes are produced annually by the food processing industry. These waste materials contain principally biodegradable organic matter and their disposal creates serious environmental problems. The waste loads at the processing plant can be significantly reduced through the use of new or modified processing methods or through in-plant treatment and reuse and a variety of processes are being developed towards this direction, aiming at converting the waste materials into bio-fuels, food ingredients and other added-value bio-products. The scope of the present study was an examination on the possibilities of using non-toxic, cheap and readily available means of recovering phenolics from red pomace and onion peels. On such a basis, the solvent systems tested were composed of ethanol, a bio-solvent that can be obtained after fermentation of the sugar-containing raw materials and distillation. In the case of red grape pomace, simple media composed of 60% ethanol were shown to be ideal for recovery of extracts with increased polyphenol concentration and antiradical activity. Higher ethanol content (90%), however, was more effective for pigment extraction. For onion peels, extracts with high flavonol recovery and a reducing power were obtained with a similar medium (60% ethanol/ 0.1% HCl), while optimisation of the extraction conditions with regard to temperature and time, afforded higher yield and more active extracts.

scholarly journals Pigments Content (Chlorophylls, Fucoxanthin and Phycobiliproteins) of Different Commercial Dried Algae

Separations ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 33 ◽  
Author(s):  
Catarina Osório ◽  
Susana Machado ◽  
Juliana Peixoto ◽  
Sílvia Bessada ◽  
Filipa B. Pimentel ◽  
...  
Keyword(s):  
Brown Algae ◽  
Carotenoid Content ◽  
Total Carotenoids ◽  
Bioactive Substances ◽  
Pigment Extraction ◽  
Wide Range ◽  
Green Microalga ◽  
Himanthalia Elongata ◽  
Highly Correlated ◽  
Laminaria Ochroleuca

Algae are a complex, polyphyletic group of organisms, affordable and naturally rich in nutrients, but also valuable sources of structurally diverse bioactive substances such as natural pigments. The aim of this work was to evaluate the polar and non-polar pigment contents of different commercial dried algae (brown: Himanthalia elongata, Undaria pinnatifida, Laminaria ochroleuca; red: Porphyra spp.; and a blue-green microalga: Spirulina spp.). The pigment extraction was carried out using different solvents (100% methanol, 100% methanol acid free, 100% ethanol, 90% acetone, N,N-dimethylformamide, dimethyl sulfoxide-water (4:1, v/v) and pH 6.8 phosphate buffer), selected according to their affinity for each class of pigments. Acetone proved to be an efficient solvent to extract chlorophylls from brown and red algae, but not from Spirulina spp. Porphyra spp. presented considerably higher levels of all pigments compared to brown algae, although Spirulina spp. presented significantly higher (p < 0.05) levels of chlorophylls, carotenoids and phycobiliproteins, compared to all macroalgae. The content of fucoxanthin extracted from the three brown algae was highly correlated to the carotenoid content. Within this group, Himanthalia elongata presented the highest fucoxanthin/total carotenoids ratio. Although the yield of extraction depended on the solvent used, the algae studied herein are an interesting source of pigments of great value for a wide range of applications.

Natural pigment extraction from five filamentous fungi for industrial applications and dyeing of leather

2010 ◽  
Vol 79 (2) ◽  
pp. 262-268 ◽  
Author(s):  
Palanivel Velmurugan ◽  
Seralathan Kamala-Kannan ◽  
Vellingiri Balachandar ◽  
Perumalsamy Lakshmanaperumalsamy ◽  
Jong-Chan Chae ◽  
...  
Keyword(s):  
Filamentous Fungi ◽  
Industrial Applications ◽  
Natural Pigment ◽  
Pigment Extraction

Is isolating starch from the residue of annatto pigment extraction feasible?

2018 ◽  
Vol 77 ◽  
pp. 117-125 ◽  
Author(s):  
Thamiris Maria Garcia Silveira ◽  
Delia Rita Tapia-Blácido
Keyword(s):  
Pigment Extraction

scholarly journals A Comparative Assessment of Pigment Extraction from Avian Eggshells Using Two Analytical Protocols

Ardeola ◽  
2019 ◽  
Vol 67 (1) ◽  
pp. 85
Author(s):  
Jesús Gómez ◽  
Cristina Ramo ◽  
Juan A. Canales ◽  
Isabel M. García ◽  
Macarena Castro ◽  
...  
Keyword(s):  
Comparative Assessment ◽  
Pigment Extraction ◽  
Analytical Protocols

scholarly journals Bioactive Betalain Extracts from Cactus Pear Fruit Pulp, Beetroot Tubers, and Amaranth Leaves

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 5012
Author(s):  
Vuyisa Sigwela ◽  
Maryna De Wit ◽  
Alba du Toit ◽  
Gernot Osthoff ◽  
Arno Hugo
Keyword(s):  
Ascorbic Acid ◽  
Decision Tree ◽  
Radical Scavenging Activity ◽  
Food Additives ◽  
Radical Scavenging ◽  
Natural Food ◽  
Cactus Pear ◽  
Pigment Extraction ◽  
Freeze Dried ◽  
Betalain Pigment

Natural food items and the additional benefits they provide have received considerable attention in recent years. Betalains are nutritious pigments which have valuable biological properties, e.g., antioxidant and free radical scavenging activity. In this study, aqueous betalain extracts were obtained from different coloured cactus pears (purple, red/pink, and orange), amaranth, and beetroot, with and without the addition of ascorbic acid, microwave-heated, and freeze-dried and subsequently analysed by thin layer chromatography (TLC). Beetroot samples without the addition of ascorbic acid (AA) had lower phenols, flavonoids, and ascorbic acid content than beetroot samples extracted with the addition of AA. Amaranth had significantly higher contents of antioxidants than all the other plants. Results for phenolic compounds showed that there were no significant differences between cactus pear cultivars, however, significant differences were seen between the two beetroot samples (microwave-heated with and without AA) as well as amaranth. For flavonoid compounds, amaranth had significantly higher values than all other samples. The lowest flavonoid content was found in beetroot without AA (0.49 mgCE/g). For ascorbic acid, significant differences were noticed between amaranth (71.71 mg/100 g) and samples from cactus pear and beetroot. TLC results showed that purple and red cactus pear samples had the most vivid colours, a reflection of the high betacyanin and betaxanthin contents in the cultivars. Moreover, extracts from cactus pear, beetroot, and amaranth were classified according to a decision tree which was designed by the Code of Federal Regulations/Food Additives Regulation of the EU. The classification of betalain pigment extracts as colouring foods was achieved through enrichment factor calculations and the colourant decision tree. The results showed that the betalain pigment extraction method used is inexpensive, time-saving, energy-saving, non-toxic, and chemical solvent free and yields high concentrations of betalains.

scholarly journals 621 Optimizing Marigold (Tagetes erecta L.) Petal and Pigment Yield

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 504C-504 ◽  
Author(s):  
Theresa Bosma ◽  
John Dole ◽  
Niels Maness
Keyword(s):  
Carotenoid Pigment ◽  
Pigment Extraction ◽  
Harvest Dates ◽  
Establishment Method ◽  
Egg Yolks ◽  
Direct Seeded ◽  
African Marigold ◽  
Tagetes Erecta L ◽  
Flower Pigments ◽  
Orange Color

Marigold flower pigments can be extracted and used as a natural source of food colorants in the poultry and dairy industry. These pigments impart an orange color to egg yolks and a yellowish color to dairy products. We examined four African marigold cultivars for their ability to be commercially grown and harvested mechanically. `E-1236' yielded the highest quantity of lutein (22 kg/ha), a carotenoid pigment, using a spectrophotometer for quantification. `E-1236' and `A-975' were the earliest flowering cultivars, 11 June 1998 for transplants and 9 July 1998 for direct-seeded, at 8 weeks after sowing regardless of field establishment method. `E-1236' produced the greatest number of flowers in a production season, both as transplants (68 flowers/plant) and direct-seeded (57 flowers/plant) at 363,290 plants/ha. Transplants resulted in two more harvests in a single season than direct-seeded plants. Subsequently, more flowers and petal material were produced for pigment extraction than with direct-seeded plants. A one-time application of ammonium nitrate (28.02 kg/ha) at mid-season did not significantly effect flower number, flower weight, or pigment yield. Experiment was repeated in 1999 with four cultivars, two field establishment methods, seven harvest dates, and five nitrogen applications.

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