Microfossils extracted from ancient processed food.

<p>(A) starch grains from dumpling. Scale bar = 20 µm; (B) starch grains from cakes. Scale bar = 20 µm; (C) starch grains from porridge. Scale bar = 20 µm; (D) silicified epidermis from rice glume. Scale bar = 200 µm; (E) phytoliths from porridge. Scale bar = 20 µm; (F), (G) phytoliths from dumpling. Scale bar = 20 µm; (H) bran fragments from dumpling. Scale bar = 20 µm; (I) bran fragments from cakes. Scale bar = 20 µm.