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Scanning electron microscopic (SEM) images of rice starch–phenolic complexes. Different phenolic compounds—gallic acid, sinapic acid, and crude Mon-pu (Glochidion wallichianum Muell Arg) extract—were complexed with hydrothermally pre-gelatinized rice starch prepared using distilled water (Water) or plasma-activated water (PAW) without and with the aid of ultrasonication (+US). The native starch was used to compare. EHT: 2.0 kV. Magnification: 10,000×.
