Synthesis, Characterization, and Antibacterial Properties of Silver Nanoparticles Prepared from Aqueous Peel Extract of Pineapple, Ananas comosus

Abstract

The seed of rice (Oryza sativa L.) from the highlands of northern Thailand, which is located within the species' centre of diversity, constitutes some of the world's last local rice germplasm still retained on-farm, provides local farmers and communities with a readily accessible resource, and is a source of value-adding traits for rice breeding. This paper reports on the germplasm represented by 281 seed samples collected in 2013 from an area of the highlands between latitudes 17.76°N to 20.18°N and longitudes 97.76°E to 100.48°E. The samples were provided by farmers belonging to 10 ethnicities, in number that closely correlated with the groups' share of the highland population (r = 0.84; P < 0.01). Compared with the slender grain rice of the lowlands, the highland germplasm was distinctive in its grain shape, and classed as large grain type in the husk, and medium grain type as de-husked, brown rice. The rice, which was predominantly of non-glutinous grain type and grown mainly as upland rice, had generally higher iron concentrations than rice in the lowlands; thus demonstrating how an on-farm rice germplasm may directly benefit local farmers and communities who consume the rice they grow. In addition, potential value-adding traits were identified in varieties and seed samples with the highest zinc density and novel rice with pigmented pericarp and high anti-oxidative capacity.

Investigation of antioxidant, antibacterial, antidiabetic, and cytotoxicity potential of silver nanoparticles synthesized using the outer peel extract of Ananas comosus (L.)

“…Among nanoparticles made using metals such as Au, Ag, Ce, Pt, Pd, and Zn [6], AgNPs are well known for their beneficial effects owing to their antidiabetic, anti-oxidative, antibacterial, and cytotoxic activities [4, 7, 8]. It is also used as an antiseptic agent for long times [9]. Because of their broad-spectrum antimicrobial potential [10], AgNPs have been widely integrated into numerous products such as household antiseptic sprays, wound dressing agents, and antimicrobial coating agents for medical devices used to sterilize air, textiles, and surfaces [11].…”

“…Using agricultural fruit peel waste in the synthesis of AgNPs is an ecofriendly opportunity [9]. Ananas comosus (L.) Merr.…”

“…[14–16]. These bioactive compounds present in AC peel have the potential to reduce metal ions and stabilize the synthesized nanoparticles all through their growth [9].…”

“…Methanolic extract of AC fruit peel also shows anti-rheumatic activity [20]. It has been reported that AC peel extract has antioxidative and antibacterial potential, which can be useful in food applications [9, 21, 22]. The extracts of AC peels or extracts of the fermented fruit can be used as a novel candidate in therapeutic approaches for cancer [23].…”

Overview of Phytochemical Compounds and Pharmacological Activities of Ananas Comosus L. Merr

“…Methanolic fruit peel extract Antirheumatoid, antioxidant and antibacterial activities (Poadang et al, 2017) Fermented fruitextracts Candidate in therapeutic approaches for cancer (Rashad et al, 2015) Leaves extract Antidiabetic activity using streptozotocin (STZ) induced diabetic rat method (Kalpana et al, 2014) Fruit residue Nutraceutical for diabetes and related problems (Romelle et al, 2016) Ethyl acetate fraction fruit Tocolytic activity on rat and human arteri (Monji et al, 2018) compounds (Hossain and Rahman, 2011), lavones-3-ol,quercetin, lavones (Mhatre et al, 2009), ferulic acid and p-coumaric acid. Both A. comosus rind and core presented β-carotene and L-ascorbic acid, but lutein and α-carotene were found only in A. comosus rind (Freitas et al, 2015).…”