Variation in Phenolics, Flavonoids at Different Stages of Fruit Development of Pouteria Campechiana (Kunth) Baehni. And Its Antioxidant Activity

Abstract

Objective: The work was aimed to study the changes in the level of phenols and flavonoids during fruit development and its antioxidant potential. The number of experiments conducted was twenty for each case. Polyphenols at different ontological stages may help producers and food technologists to identify which cultivar and/or maturity stage are most adequate for their need. Results:The total phenolic contents varied from 30.35 to 2.26 mg chlorogenic acid equivalents/g dry weight (DW), and the total flavonoid contents ranged from 0.683 to 3.37 mg rutin equivalents/g DW. Total phenolics showed an initial increase and subsequently decreased during development. In contrast, flavonoids increased from stage I to VI. Antioxidant assays showed varied patterns of inhibition. Conclusion:Significant correlations were observed between antioxidant capacities and total phenolic and flavonoid contents.

Effect of Oven and Microwave Drying on Polyphenols Content and Antioxidant Capacity of Herbal Tea From Strobilanthes Crispus Leaves

“…Flavonoid compounds are considered to be the largest group of naturally occurring phenol and their antioxidant capacity are depending on the position of OH group [58]. Therefore, the antioxidant activity of plant extracts also comes from the presence of other antioxidant secondary metabolites, such as flavonoids, proanthocyanidins, anthocyanins, and not limited to phenolics content [59,60].…”

Sequential and Simultaneous Interactions of Plant Allelochemical Flavone, Bt Toxin Vip3A, and Insecticide Emamectin Benzoate in Spodoptera frugiperda

“…S. frugiperda and other target pests of Bt-transgenic crops may concurrently or sequentially encounter Bt toxins, anti-herbivore allelochemicals and/or insecticides, depending on the spatiotemporal expression patterns of Bt toxins [ 53 , 54 ] and plant defense allelochemicals [ 55 , 56 , 57 ] as well as the timing of insecticide sprays. Binary and ternary mixtures of flavone, Vip3A, and emamectin devised to imitate concurrent consumption of the three types of poisons exhibited a toxicological synergy for flavone + Vip3A, emamectin + Vip3A, and flavone + emamectin + Vip3A but an additive interaction for flavone + emamectin ( Table 2 and Figure 1 ).…”

Inductive and synergistic interactions between plant allelochemical flavone and Bt toxin Cry1Ac in Helicoverpa armigera

“…Field larvae of H. armigera and other target pests of Bt crops may ingest Bt toxins and plant defense allelochemicals concurrently or sequentially because the spatiotemporal production profiles of Bt toxins (Sun et al ., 2016; Carriére et al ., 2018, 2019) and plant defense allelochemicals (Justesen et al ., 1997; Sunila & Murugan, 2017; Chang et al ., 2018) may be overlapped or only partially overlapped. Foraging behaviors of pests such as the nutritional/toxic status of the preferred plant parts and cannibalism also impact the ingestion time, sequence and doses of the two types of toxins and thus their survival (Yang et al ., 2008; Zhao et al ., 2016; Luong et al ., 2018, 2019; Wang et al ., 2019).…”