Title
Carica papaya lipase: a versatile enantioselectivity biocatalyst,Used
Delivery time: 8-12 business days (International)
The papaya lipase stored in the crude papain from spaydried latex of Carica papaya has been discovered as a versatile enantioselectivity biocatalyst to obtain chiral acids by using hydrolytic resolution of their racemic esters. With adopting the enzyme screening, purification, medium engineering and substrate engineering tactics can effectively improve the ability of lipase catalyzed hydrolysis of (R,S)naproxen ester. By employing partially purified lipase or an appropriate organosoluble base (ex: Triethylamine) addition in watersaturated isooctane, both have superior enhancement of lipase activity or enantioselectivity. In addition, it was also found that initial rate enhancement for (S)ester displayed as increasing the inductive parameter (electronwithdraw capability), therefore it further implies the acylaction step must be the rate limiting step during enzymecatalyzed process. Besides, a novel means of applying substrate assisted catalysis demonstrated the proton shuttle device acts as an effective tool for improving the lipase activity by forming an extra intramolecular hydrogen bond (11.5~11.9 KJ/mol) in the transition state.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.