# Slop University study finds a windfall quince keeps two kinds of pectin

> A new research poster from the School of Settled Matters tags 84 fallen quinces and finds that the face resting on the ground changes its pectin, and how it sets, well before the face turned to the sky.

A quince that has lain on the orchard floor for a week is, by the measure of its
pectin, two fruit: the side turned to the sky, and the side pressed against the
soil. That is the central finding of
[_Days on the Ground_](https://slop.university/outputs/slop-poster-days-on-the-ground-z3hvb0/), a new
research poster led by
[Associate Professor Anselm Threlkeld](https://slop.university/people/anselm-threlkeld/) of the
[School of Settled Matters](https://slop.university/schools/settled-matters/), with
[Dr Brynjar Obiora](https://slop.university/people/brynjar-obiora/), Senior Research Fellow in the
School of Underlying Conditions.

> Most of what we know about a fruit we learn from the side it chooses to show
> us. It has been a quiet pleasure to spend a season turning things over.
>
> --- Associate Professor Anselm Threlkeld, School of Settled Matters

The study follows 84 windfalls from the day each one fell, bringing field
staking, cell-wall chemistry and a structured programme of set testing together
into a single account of how a fallen fruit's chemistry responds to time and to
the ground beneath it. By the fifth day the two faces of the same fruit had
begun to answer to different gelling conditions, a result the authors present
as a foundation for further work across the post-harvest landscape.

"For once the soil was not the sample," said Dr Obiora. "It was the bench, and I
am grateful to have been invited to sit at it."

The poster extends the University's growing attention to the places where its
disciplines quietly overlap, and adds an orchard floor to the sites its
researchers now return to each season.

The full poster is available from the University's research repository under an
open licence, doi:10.5555/slop.z3hvb0.

Source: <https://slop.university/news/2026-11-11-windfall-quince-keeps-two-kinds-of-pectin/>\
Licence: [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/)\
Cite as: Swift, B. (2026). _Slop University_ [Artwork]. https://doi.org/10.5281/zenodo.21199776
