Lifestyle Approaches

Loo, May

doi:10.1016/b978-141602299-2.10004-0

Cited by 1 publication

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Proteins function as enzymes, hormones, immunoproteins, transport and structural. They are critical for maintaining physiological functions and gene expression (Loo, 2009). Results of this study showed lower amino acid contents (serine, L‐aspartic acid, amino butyric acid (GABA), glutamic acid and asparagine) in fruits stored in regular air (RA) and that presented blackspot physiological disorder (32%) of Bartolillo orchard at early harvest when compared with control fruits.…”

Section: Resultsmentioning

confidence: 99%

Metabolic profiling and biochemical analysis of stored Hass avocado fruit by GC‐MS and UHPLC‐UV‐VIS revealed oxidative stress as the main driver of ‘blackspot’ physiological disorder

Uarrota

Hernández

Ponce

et al. 2022

Int J of Food Sci Tech

View full text Add to dashboard Cite

Summary The goal of this study was to use GC‐MS and UHPLC‐UV‐VIS‐based metabolomic tools combined with chemometric analysis to discriminate between fruit with blackspot physiological disorder independently of storage condition (regular air or controlled atmosphere) and without blackspot (hereafter referred to as ‘Control’). The study looked at polar metabolites, enzymes, fatty acids and oxidative stress markers. Fruit with high levels of lenticel damage are more likely to develop blackspot, which appears to be exacerbated by H2O2 and peroxidation of lipids. Lower catalase (CAT), peroxidase (POD), polyphenol oxidase (PPO), superoxide dismutase (SOD) and phenylalanine‐ammonia lyase (PAL) activities together with lower levels of polyphenols (syringic acid, epigallocatechin, quercetin and vanillic) and fatty acids (linolenic, linoleic and palmitic acid), as well as ß‐sitosterol, methyl‐3‐hydroxybutyrate, glyceric acid, hydroxyl butanoic acid, L‐threonic acid, hydroxyl glutaric acid and xylose contributed to a higher prevalence of blackspot disorder in stored Hass avocados, which was accompanied by upregulation of soluble proteins. Finally, chemometric analysis revealed a positive relationship between blackspot disorder with gluconic, palmitoleic, galactose oxime, glyceric, hydroxyglutaric, MDA, syringic and oleic acid, as well as a negative relationship with catechin, epigallocatechin, SOD, CAT and tagatose. The study concluded that oxidative stress is the main driver of ‘Blackspot’ physiological disorder.

show abstract

Section: Resultsmentioning

confidence: 99%