Abstract Mimosa pigra peel was sun‐dried for 2 days and then ground before being boiled with 30%w/v sodium hydroxide (NaOH) at 100°C 3 h, washed dried 55°C to constant weight. The cellulose synthesized using different NaOH concentrations monochloroacetic acid (MCA) in isopropyl alcohol (IPA). Effects of various on degree substitution (DS), viscosity thermal carboxymethyl from (CMC m ) were investigated. increasing concentration resulted DS viscosity. However, CMC decreased as temperature...

The marketable period of fresh-cut `Tommy Atkins' and `Kent' mango cubes was 3 to 5 days at 10 °C 8 °C. extended by 1 2 when were held in a 4 kPa O + CO or (balance N ) atmospheres, depending on cultivar temperature. Variations texture (shear force), pH, soluble solids greater among from different lots than temperatures atmospheres. Yeast count increased more with time did the total mesophilic aerobic count, increase less under controlled atmosphere (CA) air CA beneficial maintaining quality...

Abstract BACKGROUND: Edible coatings may extend fresh‐cut fruit storage by preventing moisture loss and decreasing gas exchange. This study evaluated the effect of an antibrowning dip (calcium ascorbate, citric acid N ‐acetyl‐ L ‐cysteine), followed or not with carboxymethylcellulose (CMC) carrageenan on quality mangoes stored at 5 °C for up to 20 days. A fourth treatment, only used in one four experiments, consisted chitosan. Treatments were applied ‘Tommy Atkins’, ‘Kent’ ‘Keitt’ harvested...

Summary Active film from chitosan was developed by adding potassium sorbate or vanillin as antimicrobial agents. The addition of in the film's formula resulted less transparency, lower strength, water permeability, while increased flexibility and oxygen permeability. Addition more yellow colour, strength After that, all films were used to wrap around butter cake. inhibitory effect against mould studied using commercial stretch control. Mould observed on cake wrapped day 4 7, respectively,...

ABSTRACT: The diffusion kinetics and factors affecting the migration of vanillin from chitosan/methyl cellulose (Chi/MC) films into water, cantaloupe juice (CJ), pineapple (PJ), citrate buffer adjusted to pH values 3.5, 5, 6.5 were studied. Vanillin was incorporated Chi/MC provide an inhibitory effect against microorganisms. Initial concentration in films, temperature, extracting solvent impacted behavior vanillin. coefficients (D) followed Arrhenius equation increased as temperature for all...

Thai eat the young leaves of mango as vegetables. Antioxidants in cultivars 'Talapnak', 'Chok Anan' and 'Nam Dok Mai' were identified by high-performance liquid chromatography coupled with an online ABTS assay (HPLC-ABTS) electrospray ionization mass spectrometer (HPLC-ESI-MS). Young cv. had highest antioxidant capacity. Major antioxidants man- giferin benzophenones (maclurin iriflophenone derivatives). Mangiferin presented higher quantities than other compounds each cultivar, 'Talapnak'...

Tangerine fruit cv. Sai Nam Phueng was coated with six commercial coatings: Citrashine, Fomesa, Citrosol AK, Supershine-C, Zivdar, and Perfect Shine. Fruit were using gloved hands stored at room temperature (23 ± 3 °C) 56% 5% relative humidity. Physiological chemical properties recorded on Days 0, 1, 4, 7, 10, 13. All had lower respiration rates, reduced weight loss, higher gloss, better appearance than control fruit. Coatings somewhat increased total soluble solids levels, but no major...

The influences of on-tree, off-tree and cold storage on physico-chemical biochemical were studied quite similar between thetwo tangerine cultivars, 'Sai Num Phueng' 'See Thong'. In both the percentage weight loss increased moisture content peel (%) decreased at higher temperature longer duration. Low 5°C reduced losses fruit preserved external quality better than 25°C storage. During on-tree 25 5°C, chlorophyll carotenoid increased. Titratable acidity (TA), citric acid, isocitric acid...

Abstract Chitosan‐methyl cellulose based films which incorporatate vanillin as an antimicrobial agent and polyethylene glycol 400 (PEG) a plasticizer were developed in this study. The effects of concentration on mechanical, barrier, optical, thermal properties chitosan‐methyl film evaluated. When the was increased at given PEG level, flexibility decreased while tensile strength slightly. Vanillin barrier to oxygen but not water vapor. Increasing content resulted less transparency more...

Citric acid accumulation and decline its related enzymes were studied at different stages of growth two tangerine cultivars, 'Sai Num Phueng' 'See Thong'. acidcontent increased to the peak early stage (16-24 weeks after full bloom, WAF), then decreased rapidly for 28-34 WAFand slightly during maturation (35-37 WAF). had higher citric content than The activities citrate synthase in mitochondrial fraction, aconitase both cytosolic fractions NADP-isocitrate dehydrogenase (IDH) fraction...

The juice extracted from cashew apples contains tannins that must be reduced due to their astringency and anti-nutritional properties. This study investigated reducing the in apple by mixing gelatin at 0.0 1.0% (w/v) with for 5 15 min. Response surface methodology was used simulate tannin concentration, turbidity, weight of precipitate as a function concentration time. All models were significant (P<0.01) residuals exhibited normal distribution. Increasing decreased turbidity. Optimal...

Abstract BACKGROUND Edible flowers have been used in cooking as foods well medicine alternatives. The objectives were to identify a major class of organic compounds edible by applying proton nuclear magnetic resonance ( 1 H‐NMR) metabolite fingerprinting and evaluate bioactivity including antioxidant α‐amylase α‐glucosidase inhibitory activities. RESULTS A total 32 metabolites five acids, eight sugars, 11 amino acids phenolic identified using H‐NMR at 600 MHz. aromatic was observed the...

Quality and shelf life of sanitized peeled litchi arils three cultivars, 'Honghuay', 'Gimjeng' 'Jugkapat', were studied. The deseeded with 50 mg/L peroxyacetic acid (PAA) solutions for 1 min. Subsequently, they drained, packed in a polystyrene clamshell box analyzed during storage at 4±1°C 12 days. Firmness lightness (L*) values the decreased juice leakage increased storage. pH, total soluble solids titratable acidity changed slightly. Ascorbic contents after sanitation Sanitation PAA...