![]() ![]() ![]() When the beetle is agitated this gland is ruptured by rubbing with the hind tarsus for the release of the secretion as a part of a defense mechanism against the enemies. The defensive glands are invaginations of the intersegmental membrane between the seventh and eighth sternites, which expand backward and evert when the abdomen is pressed 3. When agitated, the beetles secrete an odoriferous substance from their defensive gland that causes blisters on human skin. ![]() The adult beetle possesses two tiny defensive glands that measure about 0.8–0.9 mm in size. tristis, numbering from 0.5 to over 4 million per residential buildings after summer showers, and their lengthy state of dormancy are a common occurrence in rubber plantation regions along the western slopes of the southern region of the Western Ghats, especially Kerala and Tamil Nadu states of India 2. Large invasions of the litter-dwelling beetle L. The experimental organism, Luprops tristis Fabricius (Order: Coleoptera Family: Tenebrionidae), is a detritus-feeding beetle whose distribution stretches from tropical Africa to Asia and the East Indies to Papua New Guinea 1. AgNPs exhibited anticancer activity in a cytotoxicity experiment against Dalton’s lymphoma ascites (DLA) cell line. Radical scavenging (DPPH) assay was used to determine the antioxidant activity of the AgNPs. The AgNPs synthesized have antibacterial property against both Staphylococcus aureus and Escherichia coli. EDX analysis showed that silver is the prominent metal present in the nanomaterial solution. The average size of nanoparticle ranges from 10 to 20 nm. The TEM analysis confirmed that AgNPs are well dispersed and almost round shaped. The stability of biologically synthesized nanoparticles was studied by zeta potential analysis. The synthesized AgNPs were characterized by Ultraviolet–Visible (UV–Vis) spectroscopy, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy energy-dispersive X-ray (SEM–EDX) analysis and high-resolution transmission electron microscopic (HR-TEM) techniques. A possible mechanism for the reduction of silver nitrate (AgNO 3) into AgNPs is suggested. The results of the current study show that the phenolic compounds in the defensive gland extract of the beetle has the ability to reduce silver ions into AgNPs and also acts as a good capping and stabilizing agent. Earlier studies in our laboratory showed the presence of the phenolic compounds, 2,3-dimethyl-1,4-benzoquinone, 1,3-dihydroxy-2-methylbenzene, and 2,5-dimethylhydroquinone in the defensive gland extract of L. This study was conducted without killing the experimental insect. In the current study, microwave-assisted silver nanoparticle (AgNP) synthesis employing the defensive gland extract of Mupli beetle, Luprops tristis Fabricius (Order: Coleoptera Family: Tenebrionidae), addresses these two challenges. The second challenge is a lack of information on the chemical components needed for the biological synthesis and the chemical mechanism involved in the metal nanoparticles synthesis. Now please keep scrolling and get ready to screenshot one of these 25 incredibly cute blue-black hair color ideas, below.Discovering novel natural resources for the biological synthesis of metal nanoparticles is one of the two key challenges facing by the field of nanoparticle synthesis. And FYI to all you DIY enthusiasts: Though you can kinda get a similar, subtler blue-black shade from a box dye, this trend really will look best when in the skilled hands of a professional, so I highly recommend you spring for a salon appointment instead. ![]() From bright blue to smokey denim shades, the blue-black trend is all about customization within a narrow color palette, which makes the look even easier to wear for every hair color and skin undertone. ICYMI, the blue-black hair trend involves all-over black hair with subtle blue undertones peeking through (or, the opposite: all-over blue hair with black undertones). Because over the last few months, a new hair color trend has suddenly burst forth from the salon scene, and unlike everything that was 2020, this one is incredibly cool and fun: blue-black hair. Thankfully, I learned my lesson from that DIY dye job, and I’m now safely leaving my hair color in the hands of a trained professional-and, apparently, so is everyone else. But can you blame me? The future of hair salons was murky, and I really wanted to change up my hair color asap (priorities, right?). This time last year, I was standing in my bathroom with a towel around my neck, covered in red hair dye (RIP towel), and staring in the mirror, horrified at what I had tried to do to my hair at home. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |