Chemical, enzymatic and physical characteristic of cloudy apple juices

Liquid chromatographic method for determination of patulin in clear and cloudy apple juices and apple puree: collaborative study.

A collaborative trial was conducted to validate the effectiveness of a liquid chromatographic (LC) procedure for determination of patulin in both clear and cloudy apple juices and apple puree. The test portion of clear apple juice was directly extracted with ethyl acetate; cloudy apple juice and apple puree were treated with pectinase enzyme before extraction. After back-extraction into sodium ...

Studies on the Occurrence of Non-enzymatic Browning during the Storage of Cloudy Apple Juice

Abstract 120 day storage experiment at 4°C, 22°C and 40°C of cloudy apple juice without AA added or juice with 0.006% or 0.024% (w/w) AA added was conducted. The content of polyphenols, 5-(hydroxymethyl)furaldehyde (5-HMF), ascorbic acid, and the color were assessed by HPLC and other analysis techniques. The formation of new particles in juice during storage was studied by electronic scan micro...

Grape Juices and Their Grape-Apple Blends

This study investigated the effects of ethyl maltol and carbonation on cold-pressed Venus (new Arkansas seedless grape release, 60% Vitis vinifera L. x 40% Vitis labrusca L.) and Concord (Vitis labrusca L.) grape juices and their grape-apple blends. Sensory analysis indicated Venus juice rated higher than Concord in flavor and aroma after two months of storage at 37°C. Sensory and laboratory an...

Moisture sorption issotherm and texture characteristic of apple lavashak

determination of some physical and mechanical properties red bean

چکیده: در این تحقیق، برخی خواص فیزیکی و مکانیکی لوبیا قرمز به-صورت تابعی از محتوی رطوبت بررسی شد. نتایج نشان داد که رطوبت بر خواص فیزیکی لوبیا قرمز شامل طول، عرض، ضخامت، قطر متوسط هندسی، قطر متوسط حسابی، سطح تصویر شده، حجم، چگالی توده، تخلخل، وزن هزار دانه و زاویه ی استقرار استاتیکی در سطح احتمال 1 درصد اثر معنی داری دارد. به طوری که با افزایش رطوبت از 54/7 به 12 درصد بر پایه خشک طول، عرض، ضخام...