Days on the Ground

Esterification and Gelling Route in Windfall Quince Pectin, Face by Face

A research poster from the School of Settled Matters stakes 84 windfall quinces on one orchard floor on the day each fell, collects twelve at each of seven intervals up to nine days, and extracts pectin separately from each fruit's upper face and the face resting on the soil. Upper-face pectin stays high-methoxyl throughout, while soil-contact pectin crosses into the low-methoxyl range between days three and five and, by day seven, sets only with calcium.

@misc{slop_z3hvb0,
  author       = {Anselm Threlkeld and Brynjar Obiora},
  title        = {Days on the Ground: Esterification and Gelling Route in Windfall Quince Pectin, Face by Face},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.z3hvb0},
  url          = {https://slop.university/outputs/slop-poster-days-on-the-ground-z3hvb0/},
  version      = {1.0},
  note         = {Research poster},
}