https://padlet.com/chemcleancrew/wp1fboci1fqs Let's learn to share and share to learn =) en-us 2017-01-31 00:03:31 UTC 2021-03-05 17:57:38 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Carfront.png chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150414991 2017-01-31 00:06:15 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150414991 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415032 2017-01-31 00:06:49 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415032 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415088 2017-01-31 00:07:28 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415088 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415107 2017-01-31 00:07:45 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415107 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415135 2017-01-31 00:08:18 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415135 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415159 2017-01-31 00:08:40 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415159 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415200 2017-01-31 00:09:12 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415200 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415207 2017-01-31 00:09:18 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150415207 chemcleancrew https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150416045 1) State your name before sharing your point
2) Please share in point form to facilitate reading
3) Avoid duplication of information

]]> 2017-01-31 00:19:47 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150416045 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425294 Most of the solvents used are highly toxic. Examples: hexane, petroleum ether or tetrachloromethane.
http://www.edenbotanicals.com/extraction-methods]]> 2017-01-31 02:20:42 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425294 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425295 Tan Li Ying . 👋😁
Q2: Disadvantage 
It will leave a burnt smell, create tar build up and impairment of odour. ]]> 2017-01-31 02:20:43 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425295 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425322 Can be applied to essential oils that are not damaged by long contact with hot water. Produce higher yield ]]> 2017-01-31 02:21:06 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425322 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425405 Steam distillation allows you to control the temperature and amount of steam you apply to the plant material. Keeping the temperature right at the boiling point of water allows for the least amount of degradation to delicate botanical oils.
Eg. Lavender Oil (thermolabile)
Link: https://www.leaf.tv/articles/advantages-disadvantages-of-steam-distillation/]]> 2017-01-31 02:22:37 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425405 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425464 Not many compounds can be distilled with steam mostly only for aromatic compounds
https://en.m.wikipedia.org/wiki/Steam_distillation]]> 2017-01-31 02:23:48 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425464 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425468 - Higher initial cost for investment in the equipment needed to execute the process successfully. 
- Require some initial training in order to operate the equipment, and you must take care in conducting the process because you’re working with high temperatures, a heat source, pressurized containers and volatile oils. 

-A final hidden cost to the process is the cost of maintaining and repairing your equipment.]]> 2017-01-31 02:23:51 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425468 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425521 q2: High pressure and temperature will destroy plant's fragile substances]]> 2017-01-31 02:24:34 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425521 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425555 The solvents can never be completely eliminated]]> 2017-01-31 02:25:13 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425555 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425565 Equipment requires more manual labour and is difficult to clean as leftover paste from the previous extraction would contaminate the next batch]]> 2017-01-31 02:25:23 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425565 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425578 - poor selectivity of most solvents
http://web.ist.utl.pt/ist11061/fidel/flaves/sec5/sec53.html
- does not produce therapeutic grade oils (usually made from organically grown plants distilled at the proper temperatures by steam distillation, 100% pure of contaminants) because chemicals are used in the process
http://www.experience-essential-oils.com/methods-of-extracting-essential-oils.html
http://www.thelittleessentials.com/differences-between-essential-oil-grades/]]> 2017-01-31 02:25:33 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425578 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425702 Emulsion formation

http://katonyfoods.blogspot.sg/2008/08/advantages-and-disadvantages-of.html?m=1


]]> 2017-01-31 02:26:50 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425702 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425846 Jin]]> 2017-01-31 02:28:03 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425846 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425877 Q7. To allow higher concentration to be capture as compared to expression. These can used in herb and plants.
http://everything-lavender.com/methods-of-producing-essential-oils.html ]]> 2017-01-31 02:28:33 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425877 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425884 High quality of oil produced.
This process ensures that the resulting oil is 100% pure and retains all the properties of the plant.
https://www.enaissance.co.uk/mobile/cold-pressing-method]]> 2017-01-31 02:28:35 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425884 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425888 2017-01-31 02:28:37 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425888 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425913 it does not completely remove impurities  https://answers.yahoo.com/question/index?qid=20070805193321AAn2G7b]]> 2017-01-31 02:28:54 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425913 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425947 Absence of heat.
Reason:
Does not damage the oil.]]> 2017-01-31 02:29:36 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425947 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425962 Easy and simple to use ]]> 2017-01-31 02:29:51 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150425962 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426030 Q6)
- more expensive method
- essential oil quality affected as a result of hydrolysis, the dissolution of oxygenated compounds and the transport of microorganism

https://www.google.com.sg/url?sa=t&source=web&rct=j&url=http://www.springer.com/cda/content/document/cda_downloaddocument/9783319084480-c2.pdf%3FSGWID%3D0-0-45-1470217-p176811685&ved=0ahUKEwjqxMaUq-vRAhVHVRoKHSUEA1sQFgh2MAk&usg=AFQjCNEwF-OWJWeIao4njIrbE4rLVg2aJg&sig2=eiDIsg6DAPbdmZD2uGcEwA]]> 2017-01-31 02:30:47 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426030 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426080
- simple process 
- no need for special or toxic solvents 
- simple apparatus 
- afforadable for most ]]> 2017-01-31 02:31:30 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426080 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426091 Q6) Cold pressed oil generally spoils more quickly than other extraction methods


]]> 2017-01-31 02:31:38 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426091 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426311 Distillation (boiling with water) permits processing of finely powdered material or plant parts that, by contact with live steam,
would otherwise form lumps through which the steam cannot penetrate.

http://agritech.tnau.ac.in/horticulture/extraction_methods_natural_essential_oil.pdf]]> 2017-01-31 02:34:30 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426311 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426617 - can be done at reduced pressure (under vacuum) to reduce temperature to less than 100 degrees celsius -> beneficial in protecting botanical material & essential oil (e.g neroli oil)
- high yield of essential oil
-good recovery of constiuents 


]]> 2017-01-31 02:38:50 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426617 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426636 Distillation involves boiling of water at high temperature which kills bacteria present in the plant 🌿 ]]> 2017-01-31 02:39:11 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426636 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426703 Highly concentrated & pure. Low amount of solvent left behind. For fragile distillates.

https://naha.org/?/explore-aromatherapy/about-aromatherapy/how-are-essential-oils-extracted/]]> 2017-01-31 02:40:15 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426703 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426728 High temperature may alter compounds. Thermal degradation may occur.]]> 2017-01-31 02:40:39 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426728 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426731 Produce more environmental friendly oil
http://www.livestrong.com/article/145529-what-is-cold-pressed-oil/]]> 2017-01-31 02:40:46 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426731 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426783 Q7. Chemical components are not denatured because it is treated at room temperature compared to steam distillation which needs heat.
 http://www.pallasathenesoap.com/articles/Scent.pdf ]]> 2017-01-31 02:41:39 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426783 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426815 2017-01-31 02:42:08 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426815 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426905 Cold pressed oils retain all of their flavour, aroma, and nutritional value, making these oils great for all cooking and skin care requirements. They contain zero grams of trans fatty acids and are naturally cholesterol-free.
http://www.proteco.com.au/cold-pressing-explained/]]> 2017-01-31 02:43:45 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150426905 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427159 Solvent extraction is particularly suitable for botanical material that has a very low yield of essential oil, rose petals and jasmine blossoms, or where it is made up of mostly resinous components and as such delivers a far finer fragrance than that of distillation.

Non-volatile components of the botanical material - such as waxes and pigments are also extracted instead of removed when using another process.

http://essentialoils.co.za/solvent-extraction.htm]]> 2017-01-31 02:47:44 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427159 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427255 - Pre-concentration step is required
- Pull out the chlorophyll and other plant tissue, resulting in a highly colored or thick/viscous extract
https://naha.org/?/explore-aromatherapy/about-aromatherapy/how-are-essential-oils-extracted/]]> 2017-01-31 02:49:44 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427255 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427311 2017-01-31 02:50:55 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427311 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427386 Simple, no complex equipment , controlled recovery, large selectivity and flexibility ]]> 2017-01-31 02:52:46 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427386 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427500 A therapeutic-grade essential oil is one that is complete in its chemical constituents that is originally from the source. ]]> 2017-01-31 02:54:43 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/150427500 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/152468921 2017-02-08 14:32:06 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/152468921 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/152469207 2017-02-08 14:32:40 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/152469207 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/172158188 2017-05-16 17:36:41 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/172158188 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/175946362 2017-06-10 11:25:53 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/175946362 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/177164459 2017-06-22 04:30:53 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/177164459 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/180230288 2017-08-07 02:50:20 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/180230288 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/216389548 2017-12-15 07:15:57 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/216389548 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/219239794 2018-01-08 07:08:59 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/219239794 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/252777029 2018-04-17 20:51:42 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/252777029 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/252777347 2018-04-17 20:53:08 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/252777347 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/287134292 2018-09-28 19:57:37 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/287134292 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/310694538 2018-12-03 23:36:56 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/310694538 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/341622414 J]]> 2019-03-15 04:47:53 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/341622414 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/354666683 2019-04-27 12:27:57 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/354666683 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/422213476 Advantages and disadvantages of ecoction]]> 2019-12-10 15:29:23 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/422213476 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/437268379 2020-01-28 21:07:38 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/437268379 angeljiedaeun96 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/612272254 2020-06-05 03:44:39 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/612272254 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/677954364 2020-08-12 23:23:39 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/677954364 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/851077359 2020-10-22 03:21:58 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/851077359 https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/1041501545 put straight forward answer]]> 2020-12-24 19:40:29 UTC https://padlet.com/chemcleancrew/wp1fboci1fqs/wish/1041501545