Globally the crop insect pests damage the 30% of agriculture production due to insect spoil, and the situation is very awful in particularly developing countries such as India.  There are large number of insect pest families are well known which induce the critical destroy to agriculture crops. Crop insect pest’s harm is one of the significant features that ruin the agriculture crop productivity, although the large-scale utilization of chemical pesticides. The successfulness of the pesticides depends upon the interaction of chemicals with the physiology of the insect of the pests. In India, the Nezara viridula Linn, is one of the critical insects because of its destructive feeding on major crop which is the utmost source of economic deprivation in agriculture. The enzymes present in the gut and salivary glands of the N. Viridula play key role in the feeding behaviour. Presently very little is investigated about the gut and salivary glands of the N. Viridula at minute level. We first time investigated the different enzymes existing in the gut and salivary gland using the chemical inference. This research work is carried out to analysis the enzymes for digestive and feeding behaviour of N. Viridula which will assist the biologists to manage the challenges are created by their resistance to the traditional chemical insecticides used for prevention of N. Viridula (a type of southern green stink bug) inhabitants and high reproductive amplitude. The extensive statistics of invertase enzymes, maltase, alpha galactosidase, amylase, esterase, proteinase and polypeptidase enzymes for the N. Viridula in salivary glands and gut inspired by this research imparts supplementary resource for further understanding of the biology of this Pentatomidae (Heteroptera) species.

Electronic waste also termed as e-waste is one of the utmost rapidly growing sources of waste material along different countries. It is very much hazardous waste mainly consists of discarded electronic and electrical equipment. Most of the emerging countries including India are facing immense challenges associated to the huge generation of e-waste. The management of e-waste in problematic and costly. Illegal importation of e-waste from other countries is also a headache for developing countries. The existing process of e-waste management can cause potential risk to both human health and the environment due to different toxic elements present in e-waste. So, several new ideas should be encompassed with the target to decrease the amount of e-waste generation along with inclusion of biodegradable raw materials in electronics devices manufacturing. Because only biodegradable material can control the release of toxic element to nature. In this report, we have found that these issues should be addressed urgently and some probable solution should be introduced to avoid its harmful future consequences.

Nanomaterials (NMs) particularly synthesized by green routes have attracted the researchers and scientists for their multifunctional industrial applications. NMs have not only revolutionized the research, but also our daily life because of numerous applications in medical diagnostics, consumer products, and energy-related applications. Their unique properties are directly related to chemical composition, structure, size and shape. There are several characterization techniques are used to determine the size, composition, crystalline structure and other physical properties of NMs. Prominent among them are spectroscopic techniques such as UV-Visible, FTIR, EDX; diffraction techniques such as XRD, SAED; microscopic techniques such as SEM, TEM, AFM and others such as Zeta potential measurements. Every technique has its own merit and demerit. This mini review describes the uses of UV-Vis spectroscopy in characterization of NMs.