Corn Silk as an Agricultural Waste: A Comprehensive Review on Its Nutritional Composition and Bioactive Potential

Kaur, Puneet; Singh, Jyoti; Kaur, Mansehaj; Rasane, Prasad; Kaur, Sawinder; Kaur, Jaspreet; Nanda, Vikas; Mehta, Chandra Mohan; Sowdhanya, D.

doi:10.1007/s12649-022-02016-0

Cited by 13 publications

(7 citation statements)

References 68 publications

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“…In contrary, the corn silk extracts exhibited an absence of measurable inhibitory zones against Escherichia coli, Salmonella enterica, and Vibrio parahaemolyticus under the experimental conditions. This outcome aligns with the conclusions drawn by Grosvenor et al [71], who postulated that the variations in susceptibility between Gram-positive and Gram-negative bacteria might emanate from differences in the composition of their respective cell walls.…”

Section: Discussionsupporting

confidence: 91%

Bioactive Potential of Baby Corn Silk: In-Vitro Evaluation of Antioxidant, Antimicrobial, Anti-diabetic, and Anti-gout Activities

Shankaranarayana,

Gajanana,

Chavan

et al. 2024

Waste Biomass Valor

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To analyse phytochemical composition, antioxidant potential, antimicrobial activity and α-amylase, αglucosidase and xanthine oxidase inhibitory potential of corn silk extracts derived from the Syngenta 5414 corn variety. MethodsCorn silk sample was lyophilized and extracted using 80% ethanol, methanol, water or acetone. Phytochemicals were qualitatively screened and bioactive compounds were identi ed through GCMS. Antimicrobial activities were evaluated using the agar well method for bacteria and fungal biomass method for fungi. The extracts were subjected to evaluation for their antidiabetic activity through α-amylase and α-glucosidase inhibitory assays, while their anti-gout potential was assessed through xanthine oxidase inhibitory assay, encompassing all four solvent extracts in the study. ResultsPhytochemical screening revealed the presence of phenols, avonoids, tannins, alkaloids, sterols, protein xanthoproteic, and cardiac glycosides in the extracts. The Folin-Ciocalteu and AlCl 3 assays demonstrated higher yields of phenolics and avonoids in 80% ethanolic extract. Furthermore, the extracts remarkably scavenged reactive oxygen species like DPPH, ABTS and elicited considerable ferric ion reducing antioxidant power. GC-MS analysis identi ed 21 compounds in the 80% ethanolic extract, with 1,2,3-Propanetriol-1-acetate, n-Hexadecanoic acid, and 4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-as major components. Antimicrobial assays demonstrated the ethanolic (80%) and methanolic extract's remarkable ability to inhibit the growth of Grampositive bacteria and exhibit anti-fungal properties. The ethanolic (80%) extract exhibited an IC 50 value of 0.70 ± 0.02 and 0.71 ± 0.01 mg against α-amylase and α-glucosidase, respectively, and 33.76 ± 0.43 mg against xanthine oxidase. ConclusionCorn silk exhibits potential as a valuable reservoir of natural bioactive compounds endowed with a wide array of health-promoting properties. HighlightsThe study highlights the signi cance of natural by-products in modern medicine and emphasizes the importance of multidisciplinary research in unlocking their full potential for human health and well-being.The study emphasizes the signi cance of exploring most suitable extraction solvent for speci c sample types and the exhibited biological activities.The outcomes contribute to the understanding of corn silk's phytochemical composition and provide scienti c support for its traditional use in the management of diabetes mellitus and gout.The study bridges the gap between traditional knowledge and modern scienti c insights, rea rming the potential value of traditional medicine in addressing contemporary health challenges.

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Section: Discussionsupporting

confidence: 91%

Bioactive Potential of Baby Corn Silk: In-Vitro Evaluation of Antioxidant, Antimicrobial, Anti-diabetic, and Anti-gout Activities

Shankaranarayana,

Gajanana,

Chavan

et al. 2024

Waste Biomass Valor

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“…Therefore, a better knowledge of the phytochemical profile of corn silks would provide a better understanding of the plant defense mechanisms. Additionally, corn silk is a food by-product [ 24 ]. Several studies showed the use of corn silk in various food formulations, such as in meat balls [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Corn Silk Extract Using HPLC/HRMS/MS Analyses and Bioinformatic Data Processing

Fougère

Zubrzycki

Elfakir

et al. 2023

Plants

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In addition to having different biological activities of interest, corn silks play a role in the defense of plants. While benzoxamines and flavonoids have already been identified as molecules of plant defense and growth mechanisms, knowledge on the phytochemical composition of corn silk is lacking. Such knowledge would make it possible to better select the most effective varieties to improve resistance or bioactive properties. In this article, an approach was implemented to map a corn silk extract in two complementary ways. The first one involved working with UHPLC/HRMS data and Kendrick and van Krevelen plots to highlight a homologous series of compounds, such as lipids from 17 to 23 carbons, monoglycosylated flavonoids from 21 to 24 carbons, diglycosylated flavonoids of 26 to 28 carbons and organic acids of 14 to 19 carbons. The second way was to analyze the sample in UHPLC/HRMS2 and to plot mass spectral similarity networks with the GNPS platform and Cytoscape software to refine identification. By combining the information obtained, we were able to propose an identification for 104 detected molecules, including 7 nitrogenous, 28 lipidic and 67 phenolic compounds, leading to the first detailed phytochemical analysis of corn silk extract.

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“…Various studies have aimed to identify and characterize these compounds, shedding light on the potential therapeutic effects of corn silk. Some of the key chemical constituents found in CS include flavonoids (CSF), such as quercetin, kaempferol, and rutin [5]. Corn silk is identified as an excellent source of flavones.…”

Section: Millionmentioning

confidence: 99%

Valorization of Corn Silk as an Agricultural By-Product through the Optimization of Ultrasound-Assisted Extraction

Mihali,

Frumuzachi,

Nicolescu

et al. 2024

Applied Sciences

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Corn silk, derived from the stigmas of corn (Zea mays, Poaceae) flowers, possesses valuable bioactive compounds that can be harnessed for therapeutical, nutritional, and industrial purposes. This research aimed to optimize the extraction of bioactive compounds from corn silk, specifically flavonoids and total antioxidant capacity, by comparing it with classical extraction (infusion and maceration). The study identified significant factors influencing total flavonoid content (TFC) and antioxidant activity (assessed through an ABTS assay), including ethanol concentration, ultrasonic amplitude, and their quadratic interactions. This optimized combination of independent variables (37.89% ethanolic concentration, 48.58% ultrasound amplitude, and an extraction time of 38.72 min) yielded a balanced extraction, maximizing both TFC and antioxidant activity. Further analyses revealed significant total phenolic content, total flavonoid content (50.69 ± 0.36 mg GAE, 23.54 ± 0.01 mg QE, and 78.33 ± 0.94 mg TE/g extract, respectively), and potent in vitro antioxidant activity, affirming the efficacy of the optimized extraction. The study also explored the inhibitory effects on α-glucosidase (IC50 = 411.67 ± 25.39 µg/mL), acetylcholinesterase (IC50 = 1166.4 ± 399.38 µg/mL), and pancreatic lipase (IC50 = 1519.67 ± 209.04 µg/mL), showcasing potential antidiabetic and neuroprotective properties. While tyrosinase inhibition activity was not observed, the research emphasizes the nutraceutical potential of corn silk, offering valuable insights for its utilization and further exploration in the pharmaceutical and functional food industries.

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Corn Silk as an Agricultural Waste: A Comprehensive Review on Its Nutritional Composition and Bioactive Potential

Cited by 13 publications

References 68 publications

Bioactive Potential of Baby Corn Silk: In-Vitro Evaluation of Antioxidant, Antimicrobial, Anti-diabetic, and Anti-gout Activities

Bioactive Potential of Baby Corn Silk: In-Vitro Evaluation of Antioxidant, Antimicrobial, Anti-diabetic, and Anti-gout Activities

Characterization of Corn Silk Extract Using HPLC/HRMS/MS Analyses and Bioinformatic Data Processing

Valorization of Corn Silk as an Agricultural By-Product through the Optimization of Ultrasound-Assisted Extraction

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