Enhancement of yield and nutritional value of soybean sprouts by persimmon fruit powder

Abstract

Large amount of soybean sprouts has been produced for human consumption in Korea for a long time. Various techniques and production methods have been implied to enhance the quality and yield of soybean sprouts. The objective of the present study was to investigate the effect of persimmon fruit powder treatment on yield and nutritional value of soybean sprouts. The sprout yield was increased by 16% with the addition of 5% (w/v) persimmon fruit powder during seed soaking. Vitamin C and polyphenol content were significantly (p<0.05) increased. Similarly, essential as well as total amino acid content were also enhanced. However, the moisture content and DPPH radical scavenging potential of soybean sprout were not significantly affected. On the other hand, the mineral elements especially potassium and calcium content were reduced with the application of persimmon fruit powder. The results of the present study suggest that addition of persimmon fruit powder could improve the yield, vitamin C and amino acid content, and antioxidant potential of soybean sprouts.

The Interplay between Light Quality and Biostimulant Application Affects the Antioxidant Capacity and Photosynthetic Traits of Soybean (Glycine max L. Merrill)

“…K-0.05% seemed to be the most appropriate concentration to obtain healthier sprouts. Our results were in part consistent with Kim et al [43], who demonstrated that seeds soaked with increasing concentrations of persimmon fruit powder produced sprouts proportionally richer in amino acids, ascorbic acid, and polyphenols. The amino acid-based biostimulants promoted polyphenol production [44] by stimulating nitrogen metabolism enzymes involved in the synthesis of these compounds [45].…”

“…Consistent with this hypothesis, previous studies demonstrated that blue light promoted the expression of genes involved in the modulation of the ascorbic acid [48][49][50]. LQ regimes also alter the metabolism of phenolic compounds, which are generally more abundant in light-than in dark-grown sprouts [43,46,49]. The higher percentages of red and blue light may have stimulated soybean polyphenol synthesis as observed in several crop species [48], enhancing the expression of several related genes [51].…”

Production of Phenolic Compounds and Antioxidant Activity in Hairy Root Cultures of Salvia plebeia

“…After 30 min, the absorbance was detected at 517 nm using a SPECTROstar Nano. The data were calculated as a scavenging effect using the equation reported in a previous study [38]. We used a plotted curve to calculate the 50% inhibitory concentration of 0.2 mM DPPH (IC 50 ) and expressed the results in µL/mL.…”

Influence of stress conditions on the quality of obtained sprouts – modification of their chemical composition

“…Modification of sprouts' nutritional quality may also be achieved with the application of many chemicals (isolated or in mixtures) (Table 5). Examples include oregano extract, fish protein hydrolysate, peptides (e.g., lactoferrin) (Randhir et al, 2004a, b), marine protein hydrolysates (Ramakrishna et al, 2019), Saccharomyces cerevisiae and Salix daphnoides bark extracts (Gawlik-Dziki et al, 2013), tea tree extract (Viacava and Roura, 2015), H 2 O 2 (Świeca, 2015), persimmon fruit powder (Kim et al, 2016), amino acids (e.g., phenylalanine, methionine, tryptophan, tyrosine) (Pérez-Balibrea et al, 2011;Seo et al, 2015;, CaCl 2 and sucrose (Sim et al, 2019), glucose (Wei et al, 2011), and other saccharides (e.g., chitosan) (Lee et al, 2005;Qiang et al, 2005) or plant growth regulators (Abellán et al, 2019;Moreira-Rodríguez et al, 2017;Pérez-Balibrea et al, 2011). Enrichment of the growing medium takes place at the stage of pre-sowing treatment, and also during the further stages of sprouting.…”