Heather Joesting

3 Questions 2 Answers 0 Followers

Questions related from Heather Joesting

How long can you store extracted xanthophyll samples?

Samples were extracted following Thayer and Bjorkmann 1990 using 80% cold acetone and were stored in a freezer in HPLC vials. Should I expect degradation of pigments with time?

12 November 2018 7,598 2 View

Supplier for xanthophyll pigment standards?

I am trying to find a supplier in the US to purchase HPLC pigment standards for the xanthophyll cycle pigments, specifically antheraxanthin. I have found a supplier for zeaxanthin and...

01 November 2017 5,982 3 View

Does anyone know of a method to isolate glandular trichomes from a leaf and determine the exudate?

I have observed what appears to be glandular trichomes on the coastal sand dune shrub Iva imbricata. I hypothesize that these trichomes function to exudate salt that may enter the leaves through...

08 December 2014 8,843 2 View