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pazu
註冊時間: 2012-04-10 文章: 1121 來自: ??
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發表於: 星期二 五月 15, 2012 6:39 pm 文章主題: |
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????ESPRESSO??? |
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eddiebuzz
註冊時間: 2011-07-19 文章: 133
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發表於: 星期二 五月 15, 2012 7:51 pm 文章主題: |
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littlelittle 寫到: | eddiebuzz 寫到: | I would interpret these figures the amount of dissolved caffeine, in unit volume, at different temperature. However, I doubt if the same amount of caffeine being dissolved with an ice drip apparatus, as it is "supplying" fresh water to the ground coffee, at a very very low rate for hours of dripping
??????????????, ?????????????
solubility of stone in water? |
Solubility of caffeine in water in 2.2 mg/mL at 25 degree C, that means only 2.2mg of caffeine can be dissolved in to 1ml of water. Solubility is not related to the rate of caffeine to be dissolved. In my mind, at 25 degree C, that maximum content of caffeine in 1lite of water is only 2.2g, no mater how long extra brewing time and how much extra coffee powder I added.
Ok, let us compare these figure
Drip coffee=555845 mg/l
Espresso=1,6912254 mg/l
Maximum caffeine content at 25 degree C water=2200 mg/L
My query is that: what is the rate of dissolving of caffeine in low temperature? How long will the brew process make the coffee contain maximum/saturated caffeine contend? 12 hrs? 24 hrs? more than 24 hrs?
It's very interesting~ |
???????????d... ??????
????saturation, solubity ?????constant, 2.2mg@25c/ml, 5.2mg@??c/ml..... ?4 degree ?, ????? 1mg or below. ??constant apply ?brew coffee, ????, ?ice drip ?????
????50g ground coffee ??ice drip, ??????????????, ???????saturation, ???ground coffee ?caffeine ?formula ???????????, ??
Integral 0 to T of (W - CVt)
W ??????, C ?constant, V ?????volume, t ?????, ??????.
????????mathematical power, ?T ???infinity, caffeine ????.
???????brew ???????. ??????, ??American drip, ?brew ??????. ???????, ???????. ?????scientific ?????????, ???????, ?????????????. ??????????, ?????????. |
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pazu
註冊時間: 2012-04-10 文章: 1121 來自: ??
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發表於: 星期二 五月 15, 2012 8:43 pm 文章主題: |
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???MATHS ???????? |
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eddiebuzz
註冊時間: 2011-07-19 文章: 133
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發表於: 星期二 五月 15, 2012 9:27 pm 文章主題: |
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??????.. ??????? |
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isaac1213
註冊時間: 2011-05-10 文章: 1459
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發表於: 星期二 五月 15, 2012 9:47 pm 文章主題: |
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eddiebuzz 寫到: | ??????.. ??????? |
?????????eddie??little??????? _________________ ???????http://isaacwmt.wordpress.com/
Gaggia Classic + Eureka Mignon + ??? + OE LIDO#629 + OE LIDO 2 (1st Batch) + KONO SK-3A + KALITA 600
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pazu
註冊時間: 2012-04-10 文章: 1121 來自: ??
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發表於: 星期二 五月 15, 2012 9:49 pm 文章主題: |
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??Isaac?,????????? |
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isaac1213
註冊時間: 2011-05-10 文章: 1459
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發表於: 星期二 五月 15, 2012 9:55 pm 文章主題: |
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pazu 寫到: | ??Isaac?,????????? |
啱啱???ok??????? _________________ ???????http://isaacwmt.wordpress.com/
Gaggia Classic + Eureka Mignon + ??? + OE LIDO#629 + OE LIDO 2 (1st Batch) + KONO SK-3A + KALITA 600
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isaac1213
註冊時間: 2011-05-10 文章: 1459
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發表於: 星期三 五月 16, 2012 9:53 am 文章主題: |
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????d????????????????????d?
????????
????????嘅?????(??pocky????嘅??? ??? Mexico Chiapas????????? )??????
???????????
???15 g
???porlex mini????6?
??4??????????
????30 ml????
???????????(???)???????
??????????...
d???????????????? _________________ ???????http://isaacwmt.wordpress.com/
Gaggia Classic + Eureka Mignon + ??? + OE LIDO#629 + OE LIDO 2 (1st Batch) + KONO SK-3A + KALITA 600
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pandaray
註冊時間: 2012-04-18 文章: 479 來自: ??
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發表於: 星期三 五月 16, 2012 10:04 am 文章主題: |
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?????????????, ???????, ????sake cooler, ?????????/????, ?????????, ??????keep????????? |
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eddiebuzz
註冊時間: 2011-07-19 文章: 133
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發表於: 星期三 五月 16, 2012 10:27 am 文章主題: |
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pandaray 寫到: | ?????????????, ???????, ????sake cooler, ?????????/????, ?????????, ??????keep????????? |
???????????. ??????french press ????????, ??????????????. |
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eddiebuzz
註冊時間: 2011-07-19 文章: 133
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發表於: 星期三 五月 16, 2012 10:47 am 文章主題: |
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????? cc ??
??? 1.5???
??? 3???
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pandaray
註冊時間: 2012-04-18 文章: 479 來自: ??
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發表於: 星期三 五月 16, 2012 11:22 am 文章主題: |
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?????????????? |
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eddiebuzz
註冊時間: 2011-07-19 文章: 133
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發表於: 星期三 五月 16, 2012 11:55 am 文章主題: |
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pandaray 寫到: | ?????????????? |
????????, ??????????? |
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isaac1213
註冊時間: 2011-05-10 文章: 1459
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發表於: 星期三 五月 16, 2012 12:03 pm 文章主題: |
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eddiebuzz 寫到: | ????? cc ??
??? 1.5???
??? 3???
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eddie????????????/??啱????3???????????
???????6??????????????3???
????? _________________ ???????http://isaacwmt.wordpress.com/
Gaggia Classic + Eureka Mignon + ??? + OE LIDO#629 + OE LIDO 2 (1st Batch) + KONO SK-3A + KALITA 600
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eddiebuzz
註冊時間: 2011-07-19 文章: 133
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發表於: 星期三 五月 16, 2012 1:01 pm 文章主題: |
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isaac1213 寫到: |
eddie????????????/??啱????3???????????
???????6??????????????3???
????? |
???????4hr ?????. ?? Tiamo ?valve ?????, ????. ???????300cc
?????ok, ??basket ???????, ??, ?????. |
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