Whole, concentrated and reconstituted grape juice: Impact of processes on phenolic composition, “foxy” aromas, organic acids, sugars and antioxidant capacity

نویسندگان

چکیده

Abstract The concentration and reconstitution processes of grape juices can result in losing compounds associated with beverage quality. In this context, three tanks containing 50,000 L juice were individually concentrated up to 68 °Brix using a triple vacuum concentrator. was reconstituted the original whole (18.4). Phenolic compounds, sugars organic acids quantified by high-performance-liquid-chromatography. “Foxy” aromatic also gas-chromatography/mass-spectrometry. process resulted significant losses (Tukey test, p

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Antioxidant activity and phenolic and mineral content of rose grape juice.

There are many studies related to the antioxidant activity of grape products; however, they concern only purple and white grape varieties. Up to now, there are no reports of studies on the Goethe rose grape variety, either on its antioxidant activity or on its phenolic and mineral quantification. Thus, the purpose of this study was to evaluate in vitro and in vivo antioxidant activity, as well ...

متن کامل

Effect of pectolytic enzyme preparations on the phenolic composition and antioxidant activity of asparagus juice.

Commercial pectolytic enzymes were investigated for their influence on phenolics and antioxidant activities of asparagus juice. The antioxidant activity of asparagus juice was analyzed according to 2,2'-diphenyl-l-picrylhydrazyl and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) methods. The enzymes, with the exception of pectinase from Rhizopus sp., contained rutinase, which hydrolyzed ...

متن کامل

the effect of teaching reading as whole text task and paragraph task on efl learners speaking

abstract the present study was conducted to investigate the effectiveness of a rather newly developed method in language teaching that is the use of paragraph reading task and whole reading task and their effects on improving efl learner’s speaking ability. to fulfill the purpose of the study, first 90 participants studying their course at sa eedi high school in tehran were chosen by means of ...

15 صفحه اول

Impact of Salicylic Acid on Phenolic Metabolism and Antioxidant Activity in Four Grape Cultivars during Cold Storage

Salicylic acid (SA) plays an important role in the regulation of plant ripening and responses to abiotic stresses. In this study, the protective effect of SA on cold stress-caused oxidative damage in grape (Vitis vinifera L.) bunches was investigated during cold storage.  Grape bunches treated with 2 mM SA and  stored at 0°C with 85-90% RH for 30 days. Samples were selected from each treatment ...

متن کامل

the impact of generative learning strategy use on efl learners’ reading achievement and critical thinking

این پژوهش کوشیده است تأثیر به کارگیری راهبردهای زایا را بر پیشرفت و بسندگی در خواندن و درک مطلب و نیز بر تفکر انتقادی زبان آموزان انگلیسی را بررسی کند. در این پژوهش تعداد 46 دانش آموز دختر در مقطع متوسطه اول به صورت تصادفی انتخاب وبه دو گروه تجربی و شاهد با تعداد دانش آموزان مساوی در هر گروه تقسیم شدند. به هر دو گروه سه داستان کوتاه به عنوان موضوع خواندن برای کلاس داده شد. به گروه تجربی درابتدا...

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Food Chemistry

سال: 2021

ISSN: ['1873-7072', '0308-8146']

DOI: https://doi.org/10.1016/j.foodchem.2020.128399