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Low methoxyl pectin films loaded with sunflower seed hull powder (SP) of 53 μm of average mesh particle size: 0, 5, 8, and 12% SP (A). The surface morphologies of films loaded with 0% (B), 5% (C), 8% (D), and 12% (E) of 53-μm SP at 400X of magnification. The white bar scale at the bottom of each image corresponds to 300 μm.
