The use of live cells to synthesize green nanoparticles (NPs) is a promising and novel bio nanotechnology method.Chemical and physical methods are utilized to synthesize NPs; however, biological approaches are preferred because they are ecologically friendly, safe, healthful, cost-effective, accessible, and effective sources of high productivity and purity. Toxic and hazardous substances, as well as the use of external reducing, stabilizing, or capping agents, are not necessary for the green synthesis of NPs. Cardamom seeds, which are little Capsules (fruits) of Elettaria cardamomum (Family (Zingiberaceae)], have been used in herbal medicine to treat a wide range of ailments, including asthma, tooth and gum infections, cataracts, nausea, diarrhea, and cardiac, digestive, and kidney problems. Cardamom capsules have a number of additional health benefits that are important from both a traditional and current pharmacological perspective. MO-NPs (metal oxide nanoparticles) have caused quite a stir in recent years due to their diverse set of properties. Elettaria cardamomum is high in polyphenolic compounds and flavonoids, making it a viable green source for large-scale, low-cost, and environmentally friendly MgO-NP production. UV-Visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM) with EDS are used to investigate the phytoassisted synthesis of MgO. (Energy dispersive X-ray spectroscopy). Researchers have successfully disseminated suitable MO-NPs for obtaining significant results by leveraging their numerous desirable qualities, such as those found in the pharmaceutical, ceramics, textile, electronic, and fertilizer industries.

Fundamental oil of Mentha piperita are perplexing blends detached from sweet-smelling plants which may have antimicrobial, cooling receptor trigger, pesticidal, anticancer, hack, asthma, and use in painkiller, exercises of enthusiasm for the sustenance and corrective enterprises just as in the human well-being field in pharmaceutical. According to the German Commission E monographs, peppermint oil is greatly employed as an antispasmodic in the stomach and intestine in bile channel and for the treatment of peevish entrails disorder, inflammation of the respiratory tract, and aggravation of the oral mucosa. Remotely, M. piperita has been employed for myalgia and neuralgia. As indicated by German Commission E, M. piperita may likewise go about as a carminative, disinfectant, and pectolytic, having soothing activity. Enteric-covered peppermint oil containers (Colpermin) are mostly employed as an orally controlled antispasmodic premedication in the study of large intestine.

For citrus lemon, the most common name is lemon and it is an edible fruit. After orange, lemon is the third most signifi cant specie of citrus fruits which is cultivated more than 4.4 million ton in each year. At present, the biggest producer of lemons in the world is Argentina with 1.2 million tones. In lemon, very important natural compounds containing ascorbic acid, minerals, citric acid, essential oils and fl avonoids are present in high quantity [2]. Lemon shows anticancer and antibacterial activity due to the presence of alkaloid constituent in different parts of lemon leaves, stem, root and fl ower [3]. There are different varieties of lemon include: Avon, Berna, Baboon, Bearss, Cameron [4]. Peels of lemon consist of various phytochemicals, such as glycosides, volatile oils,  and -sitosterol. There are various signifi cant activities found in lemon like polyethoxylated, ascorbic acid, fl avones, phenolic compounds which are exceptional in other plants. In 200A.D, lemon plant was fi rst introduced in southern