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Near-infrared spectroscopy (NIRS) in the range 900–1700 nm was performed to develop a classifying model for dead seeds of mung bean using single kernel measurements. The use of the combination of transmission-absorption spectra and reflection-absorption spectra was determined to yield a better classification performance (87.88%) than the use of only transmission-absorption spectra (81.31%). The effect of the orientation of the mung bean with respect to the light source on its absorbance was investigated. The results showed that hilum-down orientation exhibited the highest absorbance compared to the hilum-up and hilum-parallel-to-ground orientations. We subsequently examined the spectral information related to the seed orientation by developing a classifying model for seed orientation. The wavelengths associated with classification based on seed orientation were obtained. Finally, we determined that the re-developed classifying model excluding the wavelengths related to the seed orientation afforded better accuracy (89.39%) than that using the entire wavelength range (87.88%).

Infrared (IR) heating is often used for the treatment of liquid and solid foods. IR treatment is known to enhance their shelf life by reducing moisture content and inactivating the microorganisms. Mung bean (a type of pulse from India) is a short season crop; suffers maximum storage loss when compared to other legume grains. The losses are due to moisture and temperature movements. Drying of grains is an important post-harvest operation. IR drying is advantageous over the conventional drying methods. In this paper, the drying of mung bean is considered. An experimental setup is developed to obtain the required moisture and temperature profiles. The equivalent model is simulated using COMSOL multiphysics software and the percentage error between the experimental and simulated models is calculated. Results of numerical implementation are presented and possible further extensions are identified.

Periconia sp. (endophytic fungus) biomass was effectively explored as the source for the fabrication of carbon nanostructures by one-step carbonization at 800^∘C for 2h. The morphological characterizations of obtained biocarbon through SEM and TEM analysis revealed the formation of 2D-platelet-like carbon nanostructures. Further, its phase and structural characterizations through Raman and XRD analysis also supported the same. The obtained biocarbon was coated upon mung bean seeds to investigate its influence on germination and growth. The preliminary results revealed that the biocarbon accelerates seed germination and growth behavior of mung bean, which was observed by means of length, mass, and surface area profile respectively for the the plant’s shoots, roots, and leaves. It was also found that the germination and growth effects are highly dependent on the concentration of the biocarbon, in which 1000mg of biocarbon in 50mL of water is found to be higher than the lower concentration for seed germination and seedling growth.

The experiment researched toxic effects of two different concentration copper ions, CuSO₄, CuCl₂, on the germination in mung bean and soybean by hydroponics, then got the relationship between the concentration and effect, and we came to a conclusion that the concentration range of copper ion which plants could withstand. Thus to reduce the impact on the ecological environment., Experiments showed that the inhibition of germination rate on mung bean and soybean were gradually enhanced first and then little by little flatten out with the increase of concentration of copper ion; In the same concentration of toxic donor, the germination rate of mung bean was higher than that of soybean, such as in CuCl₂, the germination rate EC₅₀ of mung bean was 5.594 mg·L^-1 and soybean was 5.659 mg·L^-1; but in the same concentration of CuSO₄, the germination rate EC₅₀ of mung bean was 5.388 mg·L^-1 and soybean was 5.417 mg·L^-1, This illustrated that the tolerance to copper ion of mung beans was stronger than soybean; By comparing germination rate of mung bean and soybean which were cultured in the same concentration of CuCl₂ solution and CuSO₄ solution, we discovered that the solution of CuCl₂ on seed germination inhibition was lower than CuSO₄.

In order to investigate the influence of copper on leguminous plant root elongation inhibition in the period of bud. Hydroponics was applied in this experiment, we studied the influence of different concentration of CuSO₄, CuCl₂ solution on the root elongation inhibition which was a classic toxicity index data of mung bean and soybean, it was concluded that the relationship between the concentration and effect, then we drew the conclusion that the concentration range of copper that plant could withstand. Experiments showed that with the increase of concentration of copper ion, the inhibition of root elongation on mung bean and soybean were increased first and then leveling off in the experimental concentration range; in the same concentration of CuSO₄ and CuCl₂ solutions. the inhibition of CuSO₄ on root elongation was opposite bigger for two kinds of leguminous plants, such as in CuSO₄ solution, the EC₅₀ of mung beans was 1.278 mg·L^-1, but in CuCl₂ solution, EC₅₀ was 1.385 mg·L^-1; On the other hand, the inhibition of copper ion on root elongation was also influenced by the types of plants, For example, in CuCl₂,the EC₅₀ of mung beans was 1.385 mg·L^-1, the EC₅₀ of soybean was 1.214 mg·L^-1, but in CuSO₄, the EC₅₀ of mung bean was 1.278 mg·L^-1, the EC₅₀ of soybean was 1.102 mg·L^-1. It showed that the inhibition of copper ion on root elongation to mung bean was smaller than soybean.