Structural and Physicochemical Characteristics of Granular Malic Acid-Treated Sweet Potato Starch Containing Heat-Stable Resistant Starch

Figure 1

Light micrographs of raw and malic acid-treated sweet potato starches (magnification 400×): (a) raw, (b) 2.0M-25, (c) DW-130, (d) 0.5M-130, (e) 1.0M-130, (f) 1.5M-130, and (g) 2.0M-130; 1-under visible light and 2-under polarized light.

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