L-Proline CAS 147-85-3

L-Proline CAS 147-85-3

Contact : Mr.Thyen------------------------------- Email us at zhangyinglong@ycphar.com Whatsapp : +86 180 3817 6818

Product Details


L-Proline CAS 147-85-3

Contact : Mr.Thyen

Email us at zhangyinglong@ycphar.com

Whatsapp : +86 180 3817 6818


Laccase
Product Name: LACCASE 
CAS: 80498-15-3 
EINECS: 420-150-4 
Laccases (EC 1.10.3.2) are copper-containing oxidase enzymes that are found in many plants, fungi, and microorganisms. The copper is bound in several sites; Type 1, Type 2, and/or Type 3. The ensemble of types 2 and 3 copper is called a trinuclear cluster (see figure). Type 1 copper is available to action of solvents, such as water. It can be displaced by mercury, substituted by cobalt or removed via a copper complexone. Removal of type 1 copper causes a decrease in laccase activity. Cyanide can remove all copper from the enzyme however re-embedding with type 1 and type 2 copper has been shown to be impossible. Type 3 copper however can be embed back into the enzyme. Laccases act on phenols and similar molecules, performing a one-electron oxidations, which remain poorly defined. It is proposed that laccases play a role in the formation of lignin by promoting the oxidative coupling of monolignols, a family of naturally occurring phenols.[1] Laccases can be polymeric, and the enzymatically active form can be a dimer or trimer. Other laccases, such as ones produced by the fungus Pleurotus ostreatus, play a role in the degradation of lignin, and can therefore be included in the broad category of ligninases.

Because laccase belongs to the oxidase enzyme family it requires oxygen as a second substrate for the enzymatic action.

Spectrophotometry can be used to detect laccases, using the substrates ABTS, syringaldazine, 2,6-dimethoxyphenol, and dimethyl-p-phenylenediamine. Activity can also be monitored with an oxygen sensor, as the oxidation of the substrate is paired with the reduction of oxygen to water.

Laccase was first studied by Gabriel Bertrand in 1894 in Chinese lacquer tree sap, where it serves in the formation of lacquer (hence the name "laccase").

Laccase is able to catalyze ring cleavage of aromatic compounds.
The hazing effect is a quality defect in beer. It is characterized by "cloudiness" in the final product. Laccase can be added to the wort or at the end of the process to remove the polyphenols that may still remain in beer. The polyphenol complexes, formed by laccases, can be separated via filtration and removes probability of the hazing effect from occurring.

Laccase can also remove excess oxygen in beer and increase the storage life of beer.

In fruit juices such as apple and grape, excess oxidation of phenolics causes negative effects on the taste, color, odour and mouthfeel. Laccase has been proposed to delay the oxidation of polyphenols and stabilize the juice. 


Our advantages:

1, High quality with competitive price: 
1)Standard: Enterprise Standard
2)All Purity≥99%
3)We are manufacturer and can provide high quality products with factory price.

2, Fast and safe delivery
1)Parcel can be sent out in 24 hours after payment. Tracking number available. 
2)Secure and discreet shipment. Various transportation methods for your choice. 
3)Customs pass rate ≥99%
4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe, and we have stock in there for transferring. 
 
3, We have clients throughout the world.
1)Professional service and rich experience make customers feel at ease, adequate stock and fast delivery meet their desire. 
2)Market feedback and goods feedback will be appreciated, meeting customers's requirement is our responsibility.
3) High quality, competitive price, fast delivery, first-class service gain the trust and praise from the customers. 

Q1: Have your Product Quality been Approved by Third Party Lab?
A: Yes, All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France etc. So you will be assured with Good Quality if you choose us. 
 
Q2:How do you treat quality complaint?
A:First of all, our QC department will do strict examination of our export products by HPLC, UV, GC , TLC and so on in order to reduce the quality problem to near zero. If there is a real quality problem ,  caused by us, we will send you free goods for replacement or refund your loss.
 
Q3: Do you Accept Sample Order?
A: Yes, we accept small order from 10g, 100g and 1kg for your evaluation quality of our goods.

Q4: Is there any discount?
A: Yes, for larger quantity, we always support with better price. 

Q5:Do you accept VISA business credit card ?
A:Sorry we don't accept VISA credit card,
We'd like to accept bank transfer, Western Union or Paypal or Moneygram
 
Q6:How long does it take to the goods arrived ?
A:It is Depending on your location,
 For small order, please expect 5-7 days by DHL,UPS,TNT, FEDEX, EMS.
For mass order, please allow 5-8 days by Air, 20-35 days by Sea.

Q7. Do  you  have  any  reshipment  policy ?  
we have good after-sale service and re-shipment policy if the parcel  lose
Our long association with  our clients has brought great benefits
We always take the upmost care in the packaging of our products 
our clients will confirm this as even they struggle to find them without help at times.
But in spite of our best efforts it is still possible  will seize a small number of packages.
In this circumstance we promise reship free  to establish  long term relationship
 
Q8 :Can I get a sample?
A: Of course. For most products we can provide you a free sample, while the shipping cost should undertake by your side.


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