'Guiwei' litchi fruit were treated with 5 ga.i. L(-1) apple polyphenols (APP) and then stored at 25°C to investigate the effects on pericarp browning. APP treatment effectively reduced pericarp browning and retarded the loss of red colour. APP-treated fruit exhibited higher levels of anthocyanins and cyanidin-3-rutinoside, which correlated with suppressed anthocyanase activity. APP treatment al...

Um procedimento melhorado para a síntese de ésteres ácido indol-2-acético em rendimentos excelentes foi obtido pela condensação de 2-halo aril aldeídos ou cetonas e isocianoacetato de etila usando líquido iônico sob irradiação de microondas controlada (100 W) a 50 C. Este método oferece um número de vantagens em termos de metodologia simples, com rendimento elevado num tempo de reação curto e e...

Polyphenol oxidase (PPO) plays a key role in the postharvest pericarp browning of litchi fruit, but its underlying mechanism remains unclear. In this study, we cloned the litchi PPO gene (LcPPO, JF926153), and described its expression patterns. The LcPPO cDNA sequence was 2120 bps in length with an open reading frame (ORF) of 1800 bps. The ORF encoded a polypeptide with 599 amino acid residues,...

Background: Jelebu is one of Negeri Sembilan districts Malaysia, famous for its wide variety D. zibethinus. It also recognized as the top hotspot area consumers looking genuine Durian Kampung. This study aimed at discovering and recording significant morphological data in identification classification zibethinus fruit Jelebu. Methods: Fifty-three accessions durian were observed from January 202...

Sucrose phosphate synthase (SPS, EC 2.4.1.14) is a key enzyme that regulates sucrose biosynthesis in plants. SPS is encoded by different gene families which display differential expression patterns and functional divergence. Genome-wide identification and expression analyses of SPS gene families have been performed in Arabidopsis, rice, and sugarcane, but a comprehensive analysis of the SPS gen...

The thermogenic activity of brown adipose tissue (BAT) and browning of white adipose tissue are important components of energy expenditure. Here we show that GPR120, a receptor for polyunsaturated fatty acids, promotes brown fat activation. Using RNA-seq to analyse mouse BAT transcriptome, we find that the gene encoding GPR120 is induced by thermogenic activation. We further show that GPR120 ac...

Brown adipose tissue (BAT) may have untapped therapeutic potential for treating metabolic disorders including type 2 diabetes and obesity because it not only dissipates energy through the expression of uncoupling protein 1 (Ucp1), but it also plays a role in diet and nonshivering thermogenesis. BAT can emerge from white fat in a process called “browning,” but how this process occurs has remaine...

Alternate strategies for prevention of enzymatic browning of fruits and vegetables are required by food industries due to restrictions and several negative health attributes of sulphites, which are effective inhibitors of enzymatic browning reaction. These reactions result mostly from polyphenol oxidase (PPO). The present study was conducted to evaluate the antioxidant and PPO inhibitory potent...

The effect of different anti-browning agents on partially purified longan polyphenol oxidase (PPO) activity was investigated by spectrophotometry, using catechol as a phenolic substrate. For this purpose, L-cysteine, potassium metabisulfite, ascorbic acid, and citric acid were used to inhibit the activity of longan PPO at different concentrations (0-10 mM). Lcysteine was found to be the most po...