For the evaluation of various phytochemicals present in diferent mushrooms we need to prepare mushroom extract and for that mushroom powder is needed. Drying of mushroom is a prerequisite for making the powder. But a problem while I faced during drying is the multiple contamination of sample. I think we should not dry the plant sample in sunlight or at oven in high temperature to preserve the light and temperature sensitive compounds. But while shade drying of mushroom, due to its high moisture content, contamination is being a major problem. What may be the solution to this problem? How can we dry mushroom without losing its compounds as well as without contamination?
DearAnkit Pandeya
Several methods, drying operation is carried out under controlled conditions to avoid too many chemical changes occurring. It should be dried as quickly as possible, without using high temperatures, preferably in a good air draft. Once thoroughly dried, plants can be stored before analysis for long periods of time. Indeed, analyses for flavonoids, alkaloids, quinones and terpenoids have been successfully carried out on herbarium plant tissue dating back many years
Pls. find the attached files, give some idea to improve your research
A.J. Harborne. 1998. Phytochemical Methods A Guide to Modern Techniques of Plant Analysis Springer Science & Business Media,Pp.302. ISBN 0412572605, 9780412572609
Page 657, In : Nirmal Sinha, Y. H. Hui, E. Özgül Evranuz, Muhammad Siddiq, Jasim Ahmed. 2010. Handbook of Vegetables and Vegetable Processing John Wiley & Sons, Pp.776.ISBN0470958448, 9780470958445
Page 29 in : Richard Owusu-Apenten. 2002. Food Protein Analysis: Quantitative Effects On Processing CRC Press,Pp.488. ISBN0203910583, 9780203910580
NIIR Board of Consultants & Engineers.2011. Handbook on Mushroom Cultivation and Processing (with Dehydration, Preservation and Canning) ASIA PACIFIC BUSINESS PRESS Inc.,Pp.544. ISBN8178330342, 9788178330341
https://www.sciencedaily.com/releases/2005/02/050218161310.htm
http://www.nutritionvalue.org/Gravy,_powder,_dry,_mushroom_nutritional_value.html
Smith, W.H. 1964. The storage of mushrooms. Ditton and Covent Garden Laboratories Annual Report, p. 18. Great Britain Agricultural Research Council.
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400025
http://scholarsresearchlibrary.com/JMB-vol2-iss2/JMB-2012-2-2-366-374.pdf
http://www.scientificpsychic.com/how-to/dry-mushrooms.html
http://www.mushroom-appreciation.com/drying-mushrooms.html#sthash.nzjcdAqz.dpbs
http://www.wikihow.com/Dry-Mushrooms
Hoping this will be helpful
Hi Ankit: If you want to have a quick dry, just use freeze dryer (lyophilizer technique) is very fast 14 h you can get a dry sample.
Dear Houda Kawas
Thank you for your concern and related links. Hope we will now be able to tackle the problem soon.
As per my experience, Freeze drying is the best method to dry the your type of material without any contamination.
Hi Ankit .You can do it with free dryer or hot air, important it is to make the process fractionally in either case.
Freeze drying concentrates and preserves the mycochemicals . In hot air drying it is important to determine the temperature that preserves the mycochemicals- temperature varies from mushroom to mushroom
standard mushroom dryers with the possibility to adjust the temperature are also good
I think in hot air drying the temperature must be lower than 50oC to protect some constituents that are sensitive to the heat and also protein structure. But in this method the mushrooms can be dried after many hours, so the freeze drying is a faster and more reliable method.
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