Barredura

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Note added at 26 mins (2018-08-18 03:03:40 GMT)
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this is what we would say

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Note added at 28 mins (2018-08-18 03:05:48 GMT)
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barreduras (=restos) sweepings

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Note added at 31 mins (2018-08-18 03:08:28 GMT)
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https://www.linguee.com/spanish-english/translation/barredur...
Esta Barredura Pro-Sostenibilidad consiste en una evaluación de .... syrups or sugar sweepings which were not produced during the marketing year in which ...

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Note added at 37 mins (2018-08-18 03:14:32 GMT)
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or "leftovers" if you like

¨Barredura¨seems to be a particular type of food waste in the bakery industry. I have not found an equivalent in English. It is referred to as ¨Waste¨.

This is the use in Spanish:
http://www.ptolomeo.unam.mx:8080/xmlui/bitstream/handle/132....
¨la barredura (...) proviene de los procesos de panificación...

Here´s a discussion of food waste in commercial baking:

http://bakerpedia.com/baked-wasted-food-waste-commercial-bak...

Below is a list of the causes of waste in the processed food sector. Notice the decription matches the one supplied above by the OP.

The top causes of waste are:

Machinery performance problems – such as product blockages and mechanical mishandling; product damage is estimated to be between 2.5 and 9%;
Poor quality production – such as over/under baking and over/under weight; reject rates average 3.5%;
Trimmings – such as un-reused pastry trim, bread crusts, tomato ends and vegetable peel;
Packaging – such as raw material packaging and scrapped product packaging;
Product disposals – such as products being past their sell-by or best-before dates; and
Market ‘imposed’ – such as last-minute customer order cancellations, inaccurate demand forecasting and a sudden loss of orders due to a change in the weather.

http://www.wrap.org.uk/content/waste-reduction-processed-foo...