Fashist - 24-2-2008 at 01:45
i am looking for cheap component that broke starch to glucose
thx
not_important - 24-2-2008 at 02:04
Google search, first 2 pages, less than 1 minute total
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S...
http://www.lsbu.ac.uk/biology/enztech/starch.html
http://www.freepatentsonline.com/3607395.html
http://books.google.com/books?id=weXKKo7u8ugC&pg=PT78&am...
Nicodem - 24-2-2008 at 02:05
What do you mean by "broke"? Is that supposed to be "hydrolyze"?
Why don't you first check the literature, especially the patents? This is a well documented industrial process. Checking the references found in
Kirk-Othmer's would also be a good idea. Show us you put some effort into this.
Fashist - 24-2-2008 at 03:45
Thanks
I search it before but most of patent use plant like Cassava and koji kom and.. for hydrolyze.but i want to use chemical component.
here i cant find Cassava or koji kom or...
not_important - 24-2-2008 at 04:01
Most patents I saw were targeting starches from grains or sugar cane stalks.
The source of the starch is not that important, especially for the non-enzyme methods. There are problems with those routes, H2SO4 gives some
condensation products, HCl can form chlorocarbons which are undesirable if the dextrose is to be used in foodstuffs.
generic enzyme hadrolysis
Some plant examples with high starch content are corn, potato, rice, sorghum, wheat, and cassava.
http://www.glue.umd.edu/~NSW/ench485/lab5.htm
using maize
http://www.freepatentsonline.com/4287304.html
You need to learn how to use a search engine. For instance, Google with the term starch hydrolysis patent -cassava gets 192.000 hits, some
of which must be useful.
evil_lurker - 24-2-2008 at 04:12
Alpha-amylase and gluco-amylase are whats needed to break down starch into glucose.
Good luck finding them cheap though.
Sauron - 24-2-2008 at 04:41
Another name for cassava is tapioca.
Used here for making (bad) Thai whiskey.
chemkid - 24-2-2008 at 06:25
Just recently i was attempting to decompose starch in to dextrin. Perhaps one could first break down to dextrin and then glucose from there.
Chemkid
Fashist - 24-2-2008 at 06:48
Thanks of you
Mr sauron tapioca is commonly plant?(may i find that?)
Mr evil gluco-amylase is commonly component? what ratio i should use?
i want to hydrolyze rice(here rice is cheap) then i want to buil ethanol.
i read in old patent that used koji-kom for hydrolyze
sparkgap - 24-2-2008 at 06:51
"tapioca is commonly plant?"
Exactly where do you live that you aren't familiar with cassava?
If I were in a bad mood, I'd have suggested that you spit into your starch to break it down into glucose, but I'm not. 
In any case, I really suggest that you spend some time searching around before
asking us.
sparky (~_~)
Fashist - 24-2-2008 at 07:09
spit into my starch?
sure i search it before and i didnt find.
not_important - 24-2-2008 at 08:53
Purification of salivary alpha amylase
http://www.science.smith.edu/departments/Biochem/Biochem_353...
experiments using fresh saliva
http://www.glue.umd.edu/~NSW/ench485/lab5.htm
http://faculty.mansfield.edu/bganong/biochemistry/spitlab.ht...
http://www.chemheritage.org/educationalservices/pharm/antibi...
starch to ethanol from 2 years ago
http://www.ethanolproducer.com/article.jsp?article_id=319
The Indians back in 1995
http://www.ncbi.nlm.nih.gov/pubmed/7783000
and Pakistan, testing the starches of waxy corn, wheat, rice, sweet potato, sago and potato, plus fermentation for ethanol production
http://eprints.hec.gov.pk/1605/1/1484.HTM
there are literally tens of thousands of documents related to what you want to do, sitting out there on the Internet. Some are basic research, some
are more detailed, some are just overviews.
Fashist - 24-2-2008 at 11:34
thanks mr not important
gluco-amylase seems be better.
anybody know company that sale it?
thx
[Edited on 24-2-2008 by Fashist]
sparkgap - 24-2-2008 at 13:43
If you can't even use a telephone directory to answer that question of yours, I really don't think your little project is going anywhere.
sparky (~_~)
Fashist - 24-2-2008 at 13:49
Mr spark i didnt find that here(no chmical strore dont know what is that)
Enzymes
MadHatter - 24-2-2008 at 18:32
https://www.friendlyscripts.com/partyman_se/stexpo/default.a...
Put 'amylase' in the search box on the left.
That link is for Gert Strand, of Sweden. Main point of entry is:
http://www.partyman.se
Fashist, is this what you had in mind ? I've had the alpha-amylase enzyme for years.
It breaks up long starch(amylose) chains. I use barley malt to get the beta-amylase.
It breaks it even further into maltose(G-G).
IIRC, the amyloglucosidase, a gamma-amylase, breaks down other types of sugars to
glucose.