楼主可以看下我写的一篇文章：
http://lestatpipes.lofter.com/post/1d2596af_74937ac
截选重点如下：
“网络上讲解烟草陈化的帖子不少，一些错误的观点也随之而来，口头相传的东西有时候和神话故事没太大区别。首先是关于”空气“的问题，氧气太少必然会导致陈化效率低下，所以极为真空的状态对烟草的陈化不是绝对好的。哪怕原装铁盒里都是有相当的空气量的。而且不少斗草厂家在调制烟草的过程中都会伴随一段时间的陈化以使烟草老熟。100吨的FVF有多大体积？厂家陈化时难道将整个仓储空间里的空气都抽干？但有些时候我们不得不抽真空，这是一种检验存储包装是否漏气的好方法，而且家庭包装中所谓的“真空”其实没那么神，里头依旧留有不少空气，足够陈化了。
其次，烟草在理想条件下虽然可以持续老熟几十年，但国外有人做过实践，5年之后草的陈化效率将会降低，因为密闭环境中的氧被逐渐消耗殆尽。所以不要相信5、6年的草会比10年的差多少。
再次，很多人认为长了糖霜/白霜的草是极品，这里我和台湾廖大哥都持怀疑态度。当烟草在包含少量空气的密闭黑暗环境中陈化时。空气不流通，氧含量越来越少，烟草陈化时产生黑色素与水分，而相对密闭的环境本身就不会令水汽透出。这时陈化的结果就是草变黑且”油油的“。而当陈化的环境不够理想时而产生少量漏气和氧气交换时，烟草原本的水分和陈化所产生的水分会慢慢消失，最终草的表面会形成”糖霜/白霜“。虽然长白霜的草味道很好，但我和廖大哥都觉得还是”黑而油“更美味。而且根据上述原理，有白霜的草代表储存不当，水分消耗过多，这种草就要赶快吃掉了，再陈化的意义不大，一不小心很容易完全干掉（很多人说SG的铁盒漏气，确实是这样的，因为漏气所以草缓慢变干，进而在陈化过程中形成白霜。这也是为什么很多人买来的圣詹和FVF有糖霜的原因了）。”
SG的草容易出霜，好多朋友买回来刚开盒的时候就有霜了，但这其实未必是好事。但SG厂家的这个做法是有学问在里面的，如果不故意让罐子缓慢“跑气”，那么在经过比较热的季节之后，草（尤其是含糖量比较大的VP类调配）就会变酸。相比于草丧失点水分失去继续陈化的潜力，变酸则要严重得多，因为它对草质的破坏是很严重的，直接减弱香气并加重烟气刺激性。
私人研究，对比得出的观点，欢迎参考。
回复 48# 饿死的猫 的帖子
猫兄拜讀了你的文章後小弟不是質疑你文章的正確性, 而是你私人研究的比對有失嚴謹!!!
廖兄所比對的是家庭號包裝,一種是整袋丟入鋁箔袋保留少量空氣密封起來陳化, 另一種是放入密封罐內的陳化,但是這種密封效果不佳,還是會產生微量空氣交換的陳化.
而你文中是以大家常說的真空鐵盒的陳化出霜後的結果和廖兄的重新密封後的研究作比對,在密封包裝的基礎上就有些不同,一種是保有少量空氣再完全密封的陳化,另一種是先真空後漏氣的陳化,己經是二種不同的陳化效果.
其實如果都是以真空鐵盒的FVF煙草來比對的話,我想大部份的斗友,都還是會說鐵盒陳化出霜的比較好,因為FVF和聖詹這類煙草的溼度比較高,不放乾一點要抽它也是有點困難.
如果二個FVF鐵盒煙草,一個用真空袋再作真空密封,一個開盒後使其進入一些空氣,且真空袋保留一些空氣作密封,小弟很想了解,這樣的比對陳化效果,會不會出現廖兄的陳化效果,黑而油的FVF煙草.
心中的猜想是很難一樣的,因為好幾位朋友都說家庭號包裝比真空鐵盒好太多了,跟本不是同一等級的煙草.
[ 本帖最后由 換條龍 于 2016-5-26 20:46 编辑 ]
Ask G. L. Pease (Volume 44)
Shawn R. asks: Lots of discussion and comments on aging - mostly VAs, but others as well. Some are bulk, some tinned, some loose ribbon, and some flake. I have to believe there is a bit of a difference in aging a (for example) straight VA ribbon vs. a flake. Different moisture content, contact between the flakes/pressed leaf, etc. If they are VA blends this would (I assume) be more pronounced. I have been reading/watching vids talking about the “sugar crystals” on aged flake - never seen that in regards to ribbon cut. I’d also assume that there would be a difference in a ribbon aged in bulk in jars where it could be packed, vs. the same blend in a tin. Looking at tobacco cellar dot com, seems that the most aged tobaccos are flakes. Can you talk a bit about this?A: It’s true that the form of the finished tobacco, as well as the package, have a significant influence on the way it will age, and the aging timeline. The most extreme difference would be between plugs and ribbon-cut blends, an interesting example of which would be my own JackKnife Plug and JackKnife ReadyRubbed. When first produced, there is absolutely no difference between the ribbon form and ribbons cut from the plug, but a month down the road, they’re like two different blends, and they will continue to diverge for years. They behave differently because of the lack of air in the interior of the plugs, compared with the abundance of air surrounding the ribbons. The result is that a very different microbial environment will exist in the two tobaccos, resulting in different tasty fermentation byproducts being formed. Lanyard style tobaccos are a little less tightly pressed than plugs, so their behavior will be somewhere between the two, though certainly closer to that of the plug.
Flakes are sort of a wild-card. They have the benefit of the different tobaccos being in close proximity to each other, but there’s still plenty of surface area that’s exposed to air. They benefit from the initial squeeze, which is probably where mot of the change takes place, but after they’re out of the presses and packaged, the behave more like ribbons than plugs. Of course, this will also depend on how tightly the flakes hold together. A looser flake will behave more like a ribbon over time than a tight one. Disc cut tobaccos, since they’re basically made from the spun lanyard, will be less altered by their initial processing than flakes, but more so than ribbons. Make sense?
The whole jar vs. tin thing is another wild card. The biggest problem with jars is that people can’t leave them alone. It’s tempting, after a few months, to open them to see how things are going, but as soon as that lid is off, the environment within the jar changes dramatically, primarily because of the air exchange that takes place. The evolution of the tobacco will be forever changed by this snooping. It’s not a bad thing, just different. Aging will continue, of course, but on a different path. As for the packing density, there will be some difference in the result of a tightly-packed jar versus one that is looser, but there’s really a lot of air in there, even if you cram it in, so the differences aren’t as dramatic as you might expect.
As far as different types of leaf affecting the aging process, you’re spot on. Virginias contain plenty of sugars, and sugars provide fuel for fermenting microorganisms. Burleys mellow over time, but virginias change, and those changes can be quite dramatic. Orientals, which contain some sugar, also change quite dramatically, so mixtures that are heavy with either of these components can be expected to undergo the greatest transformation, while burley-based blends will not change nearly as much.
节选了一段关于陈化的东西，偷懒就不翻译了