I am taking organic chemistry and I was wondering what is the best way to extract alkaloids from plants such as yohimbe, ephedra, coffee beans, passion flowers and others as well. Any help would be great.
So far I just put powdered coffee beans into Isopropanol and shook it vigorously, but I’m not sure what to do next.
Would I be able to use water+vinegar for the acidified water? Also is there anything else to use besides lye, because I don’t feel safe using that.

Technorati Tags: alkaloids, Coffee Beans, isopropanol, lye, organic chemistry, passion flowers, plants, vinegar, yohimbe

My coffee maker has started making terrible coffee. I am using the same coffee as always and the same amount per cup but the coffee is comng out bitter and just awful. Someone told me the maker probably needs cleaning and thought you used vinegar somehow. Any ideas on how to do this with household products cuz I don’t want ot buy anything.

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How does one clean the inside of aluminium stovepot coffee makers? I have tried boiling water with vinegar for 15 min. to no avail. also tried store bought tubes of "paste"

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the taste of my coffee keeps changing over a period of time. i never do anything different. i figured out a way i like it , then i keep making it that way, but then it changes. then i will go to someones house (grandmas, or something) where i learned to make it the good way, and hers tastes like it should. we live in the same area, use the same tap. same brand and kind of coffee. i even bought a new coffee maker, when this happened the last time. when the maker is new, it tastes great. then it starts to have a funny taste to me. i have cleaned my coffee pot periodically, so i don’t think it is that. any more suggestions?? my husband even notices the difference, so it isn’t my taste buds!!
yes i was the coffee carafe everyday with dishsoap. and also i clean it with a mild bleach and water-run water through then run vinegar & water through after that. then another clean set of water.
sorry, i do the vinegar & water and bleach & water thing about once a month

Technorati Tags: amp, bleach, coffee maker, coffee pot, grandmas, last time, period of time, tap, taste buds, vinegar, water run

We have a Bunn coffee maker that we use every day. It was running fine but I cleaned it (vinegar) and now it brews very light, no matter what kind of ‘roast’ we use. It’s been a week now. The water is hot, so that’s not the problem. Does anyone know why this might be happening?

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I’m doing a Science project about used coffee beans. I need them to decay. How long does that take?
they were ground, we will compost them, i live in the philippines and we have to do 3 set-ups, 1 plain, 1 soaked in water, 1 soaked in vinegar for our science project

Technorati Tags: Coffee Beans, compost, philippines, science project, set ups, ups, vinegar