The inhibitory effect of an onion extract on browning of potato was investigated. The addition of the heated onion extract to potato exhibited a marked inhibitory effect on potato polyphenol oxidase and the formation of a brown color. The inhibitory effect of the onion extract was dependent upon its heating temperature. The addition of both glycine and glucose increased the inhibitory effect of the onion extract toward potato polyphenol oxidase.
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http://dx.doi.org/10.1271/bbb.66.856 | DOI Listing |
J Food Sci
January 2025
Department of Chemistry, University of Isfahan, Isfahan, Iran.
Quercetin, a key flavonoid found in many fruits and vegetables, offers notable health benefits, including antioxidant, antiviral, and antitumor properties. Yet, isolating it from complex plant materials is challenging. This research aimed to develop a selective and efficient sorbent to clean up real sample matrices and pre-concentrate quercetin, enhancing its detection using high-performance liquid chromatography (HPLC).
View Article and Find Full Text PDFEcotoxicol Environ Saf
January 2025
State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China. Electronic address:
Cadmium (Cd) is a highly toxic agricultural pollutant that inhibits the growth and development of plants. Arbuscular mycorrhizal fungi (AMF) can enhance plant tolerance to Cd, but the regulatory mechanisms in Allium fistulosum (green onion) are unclear. This study used a Cd treatment concentration of 1.
View Article and Find Full Text PDFFoods
December 2024
Department of Food Science and Technology, Texas A&M AgriLife Research, College Station, TX 77843, USA.
This study investigated the survival and growth of in onion extracts and bulbs. The inhibition or retardation of growth by extracts of red, white, and yellow onions was tested against the onion germplasm and exposure to different light spectra during curing. Separately, survival of Newport was tested on red, white, and yellow onion bulbs on the external and internal onion layers with a syringe and needle.
View Article and Find Full Text PDFMicroorganisms
December 2024
UPIZ "Educational and Research Laboratory"-MF, NBU, Department Natural Sciences, New Bulgarian University, Montevideo Blvd., 21, 1618 Sofia, Bulgaria.
This review describes the enhanced classification of polyphenols into flavonoids, lignans, phenolic acids, stilbenes, and tannins. Its focus is the natural sources of polyphenols and an in-depth discussion of their antibacterial, antifungal, and antiviral activity. Besides a broad literature overview, this paper contains authors' experimental data according to some daily consumed vegetables such as tomatoes, different varieties of onion, garlic, parsley, and cayenne pepper and the probable relation of these activities to polyphenols.
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