Mango kernels are used for the first time as a source of both starch and starch nanocrystals (SNC) for bionanocomposite films. The starch yield was 38.5%, whereas the SNC yield (from starch) is more than 30%. Bionanocomposite films are produced from mango kernel starch (MKS) and 0-10 wt% SNC, and the corresponding films are also obtained from commercial corn starch. The addition of 5% SNC to MKS films increases their tensile strength and modulus in about 90% and 120% respectively, and reduces their water vapor permeability in about 15%. On the other hand, the film elongation has been reduced to half the one for the unfilled film, and the opacity has been increased. When compared to the corresponding corn starch films, mango kernel starch films exhibited higher overall tensile strength and elastic modulus, as well as increased opacity.
The pulsed ultraviolet radiation (UV P ) has been used as an alternative strategy for the control of microorganisms in food. However, its application causes the browning of minimally processed fruits and vegetables. In order to control the browning of the 'Tommy Atkins' minimally processed mango and treated with UV P (5.7 J cm -2
The prediction of cashew apple quality by non-destructive analysis using a portable (100 g), near infrared spectrophotometer has been investigated. The quality parameters of interest were: soluble solids content (SSC), titratable acidity (TA), SSC/TA ratio and ascorbic acid (AA). Partial least squares calibration models were developed using the spectral range from 950 nm to 1600 nm available with the portable spectrophotometer, with a spectral resolution of 10 nm. The model was validated using an independent set of samples. Validation results gave root mean square error of prediction values of 0.6%, 0.04%, 2.7 and 27 mg 100 mL -1 for SSC, TA, SSC/TA and AA, respectively.According to the results, this highly portable spectrometer can be used to monitor and control cashew apple postharvest quality, and may constitute an important tool for genome wide selection in cashew breeding programmes.
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