Transmission electron microscopy micrographs of (a) L. innocua cells from untreated fresh-cut watermelon (undamaged cells; X 50,000), (b) fresh-cut watermelon treated with malic acid (cells with alteration of cytoplasmic content; X 50,000), (c) PL-treated fresh-cut watermelon (cells with alteration of cell wall; X 50,000) and (d) fresh-cut watermelon treated with PL þ MA (cells with alteration of cytoplasmic content and cell wall; X 50,000) just after processing.
Transmission electron microscopy micrographs of (a) L. innocua cells from untreated fresh-cut watermelon (undamaged cells; X 50,000), (b) fresh-cut watermelon treated with malic acid (cells with alteration of cytoplasmic content; X 50,000), (c) PL-treated fresh-cut watermelon (cells with alteration of cell wall; X 50,000) and (d) fresh-cut watermelon treated with PL þ MA (cells with alteration of cytoplasmic content and cell wall; X 50,000) just after processing.
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