chemical components of jackfruit sap?

Answer 1

I remember jackfruit sap being full of latex, so I googled and came up with this:

"Latex: The latex serves as birdlime, alone or mixed with Ficus sap and oil from Schleichera trijuga Willd. The heated latex is employed as a household cement for mending chinaware and earthenware, and to caulk boats and holes in buckets. The chemical constituents of the latex have been reported by Tanchico and Magpanlay. It is not a substitue for rubber but contains 82.6 to 86.4% resins which may have value in varnishes. Its bacteriolytic activity is equal to that of papaya latex."

this is the ref, but it is not online and would require a trip to the library:Tanchico, S.S. and C.R. Magpanlay. 1958. Analysis and composition of Artocarpus integra latex. Phil. J. Sci.: 149-157.
(this is the Phillipine Journal of Science)

and while we're on the subject, check out these very funny pictures of people posing with their jackfruits, including one woman who dressed up her ginormous jackfruit :-)
http://waynesword.palomar.edu/jackfr1.htm