24小时热门版块排行榜    

查看: 1914  |  回复: 1

景中人

金虫 (小有名气)

[求助] TAP培养基配制问题 已有1人参与

有没有配过TAP培养基的,我按照如下的配方配制之后,第一次养莱茵衣藻,接种的量比较少,没有长起来。第二次又配制了一次,测了一下PH是4点多。我的疑问是,Tris不是可以缓冲的么,如果不可以缓冲,那肯定是要用氢氧化钠或钾调节PH的,那何不直接加乙酸钠呢?
TAP培养基配方:
Make the following stock solutions:
1. TAP salts                                  2. phosphate solution
NH4Cl                 15.0 g
MgSO4 . 7H2O                 4.0 g
CaCl2 . 2H2O                 2.0 g
water to 1 liter                 
K2HPO4                 28.8 g
KH2PO4                 14.4 g
water to 100 ml                 
  3. Hutner's trace elements
For 1 liter final mix, dissolve each compound in the volume of water indicated.
The EDTA should be dissolved in boiling water, and the FeSO4 should be prepared last to avoid oxidation.
compound        amount        water
EDTA disodium salt        50 g        250 ml
ZnSO4 . 7 H2O        22 g        100 ml
H3BO3        11.4 g        200 ml
MnCl2 . 4 H2O        5.06 g        50 ml
CoCl2. 6 H2O        1.61 g        50 ml
CuSO4 . 5 H2O         1.57 g        50 ml
(NH4)6Mo7O24. 4 H2O         1.10 g        50 ml
FeSO4. 7 H2O         4.99 g        50 ml
Mix all solutions except EDTA. Bring to boil, then add EDTA solution. The mixture should turn green. When everything is dissolved, cool to 70 degrees C. Keeping temperature at 70, add 85 ml hot 20% KOH solution (20 grams / 100 ml final volume). Do NOT use NaOH to adjust the pH.
Bring the final solution to 1 liter total volume. It should be clear green initially. Stopper the flask with a cotton plug and let it stand for 1-2 weeks, shaking it once a day. The solution should eventually turn purple and leave a rust-brown precipitate, which can be removed by filtering through two layers of Whatman#1 filter paper, repeating the filtration if necessary until the solution is clear. Store refrigerated or frozen convenient aliquots. Some people shorten the time for formation of the precipiate by bubbling the solution with filtered air.
If no precipitate forms, the solution is still usable. However, you might want to check the pH in this case and adjust it to around 7.0 using either KOH or HCl as needed.
To prepare sulfur-free trace elements for hydrogen generation, the sulfate salts can be replaced with equimolar chloride salts (ZnCl2 10.0 g; CuCl2 . 2 H2O 1.00 g; FeCl2 . 4 H2O, 3.60 g). .
To make the final medium, mix the following:
2.42 g Tris
25 ml solution #1 (salts)
0.375 ml solution #2 (phosphate)
1.0 ml solution #3 (trace elements)
1.0 ml glacial acetic acid
water to 1 liter
For solid medium, add 15 g agar per liter. Autoclave. For Tris-minimal medium omit the acetic acid and titrate the final solution to pH 7.0 with HCl
回复此楼

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

fishlucky

铁虫 (小有名气)

【答案】应助回帖

请问我按照此TAP培养基配置磷酸缓冲液时,为何溶解不了?用的K2HPO4是无水的吗  ?
2楼2016-04-21 10:44:04
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 景中人 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 286分人工智能专业请求调剂愿意跨考! +4 lemonzzn 2026-03-17 8/400 2026-03-21 22:49 by lemonzzn
[考研] 333求调剂 +5 87639 2026-03-21 7/350 2026-03-21 19:31 by ColorlessPI
[考研] 考研化学学硕调剂,一志愿985 +5 张vvvv 2026-03-15 7/350 2026-03-21 19:23 by ColorlessPI
[考研] 307求调剂 +3 余意卿 2026-03-18 3/150 2026-03-21 17:31 by ColorlessPI
[考研] 279分求调剂 一志愿211 +14 chaojifeixia 2026-03-19 15/750 2026-03-21 13:24 by zhukairuo
[考研] 330求调剂0854 +3 assdll 2026-03-21 3/150 2026-03-21 13:01 by 搏击518
[考研] 初始318分求调剂(有工作经验) +3 1911236844 2026-03-17 3/150 2026-03-21 02:33 by JourneyLucky
[考研] 求调剂 +3 Ma_xt 2026-03-17 3/150 2026-03-21 02:05 by JourneyLucky
[考研] 324求调剂 +5 lucky呀呀呀鸭 2026-03-20 5/250 2026-03-20 22:30 by 促天成
[考研] 一志愿西南交通 专硕 材料355 本科双非 求调剂 +5 西南交通专材355 2026-03-19 5/250 2026-03-20 21:10 by JourneyLucky
[考研] 353求调剂 +3 拉钩不许变 2026-03-20 3/150 2026-03-20 19:56 by JourneyLucky
[考研] 材料与化工专硕调剂 +7 heming3743 2026-03-16 7/350 2026-03-20 19:31 by zhukairuo
[考研] 招收调剂硕士 +4 lidianxing 2026-03-19 12/600 2026-03-20 12:25 by lidianxing
[考研] 一志愿中国海洋大学,生物学,301分,求调剂 +5 1孙悟空 2026-03-17 6/300 2026-03-19 23:46 by zcl123
[考研] 081700化工学硕调剂 +3 【1】 2026-03-16 3/150 2026-03-19 23:40 by edmund7
[考研] 材料工程专硕调剂 +5 204818@lcx 2026-03-17 6/300 2026-03-18 22:55 by 204818@lcx
[考研] 0854可跨调剂,一作一项核心论文五项专利,省、国级证书40+数一英一287 +8 小李0854 2026-03-16 8/400 2026-03-18 14:35 by 搏击518
[考研] 0703化学调剂 +3 妮妮ninicgb 2026-03-17 3/150 2026-03-18 10:29 by macy2011
[硕博家园] 湖北工业大学 生命科学与健康学院-课题组招收2026级食品/生物方向硕士 +3 1喜春8 2026-03-17 5/250 2026-03-17 17:18 by ber川cool子
[考研] 有没有道铁/土木的想调剂南林,给自己招师弟中~ +3 TqlXswl 2026-03-16 7/350 2026-03-17 15:23 by TqlXswl
信息提示
请填处理意见