Salmonella and Escherichia coli O157:H7 Inactivation, Color, and Bioactive Compounds Enhancement on Raspberries during Frozen Storage after Decontamination Using New Formula Sanitizer Washing or Pulsed Light

2016 ◽  
Vol 79 (7) ◽  
pp. 1107-1114 ◽  
Author(s):  
WENQING XU ◽  
HAIQIANG CHEN ◽  
CHANGQING WU
Keyword(s):  
Frozen Storage ◽  
Bacterial Count ◽  
Quality Parameters ◽  
Total Phenolic ◽  
Total Bacterial Count ◽  
Anthocyanin Content ◽  
Escherichia Coli O157 ◽  
Total Anthocyanin ◽  
E Coli ◽  
Total Anthocyanin Content

ABSTRACT Berries are normally washed before they are frozen. Washing with sanitizer and treatment with pulsed light (PL) were studied for their effectiveness to inactivate foodborne pathogens on raspberries during frozen storage, while maintaining or enhancing major quality parameters. Raspberries were inoculated with Salmonella or Escherichia coli O157:H7 and then underwent a washing treatment with citric acid plus sodium dodecyl sulfate (CA+SDS) or citric acid plus thymol (CA+THY) or treatment with PL (dry PL, water-assisted [wet] PL, and PL-SDS). Pathogen survival was determined immediately after treatments and during frozen storage at −20°C for 3 months. Washing with CA+SDS or CA+THY significantly reduced Salmonella (by 3.6 and 3.2 log CFU/g, respectively) and E. coli O157:H7 (by 4.1 and 3.7 log CFU/g, respectively). At the end of storage, washing with CA+SDS reduced Salmonella to 0.6 log CFU/g and E. coli O157:H7 to 0.5 log CFU/g; washing with CA+THY reduced Salmonella to 0.9 log CFU/g and E. coli O157:H7 to 0.5 log CFU/g. PL-SDS showed decontamination efficacy on raspberries, with 0.7 log CFU/g Salmonella and 0.9 log CFU/g E. coli O157:H7 surviving at the end of storage; in comparison, in the control, 1.6 log CFU/g Salmonella and 1.5 log CFU/g E. coli O157:H7 survived. Pathogen survival in raspberries that had been washed or treated with PL-SDS was significantly lower than in untreated raspberries. Major quality parameters, including color, total phenolic content, total anthocyanin content, total bacterial count, and total yeast and mold counts, were evaluated on raspberries immediately after treatments and during frozen storage. Redness increased in PL-treated raspberries. At the end of storage, PL-treated raspberries had significantly higher total phenolic content and total anthocyanin content compared with control samples. Washing with sanitizers and treatment with PL decreased the total bacterial count and total yeast and mold counts on raspberries and maintained the low counts. Our findings suggest that washing with a sanitizer or treatment with PL could be used to process frozen raspberries for enhanced food safety and quality.

scholarly journals Effect of Freeze Crystallization on Quality Properties of Two Endemic Patagonian Berries Juices: Murta (Ugni molinae) and Arrayan (Luma apiculata)

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 466
Author(s):  
María Guerra-Valle ◽  
Siegried Lillo-Perez ◽  
Guillermo Petzold ◽  
Patricio Orellana-Palma
Keyword(s):  
Process Parameters ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Flavonoid Content ◽  
Total Polyphenol ◽  
Total Anthocyanin ◽  
Quality Properties ◽  
Total Anthocyanin Content ◽  
Ugni Molinae

This work studied the effects of centrifugal block freeze crystallization (CBFC) on physicochemical parameters, total phenolic compound content (TPCC), antioxidant activity (AA), and process parameters applied to fresh murta and arrayan juices. In the last cycle, for fresh murta and arrayan juices, the total soluble solids (TSS) showed values close to 48 and 54 Brix, and TPCC exhibited values of approximately 20 and 66 mg gallic acid equivalents/100 grams dry matter (d.m.) for total polyphenol content, 13 and 25 mg cyanidin-3-glucoside equivalents/100 grams d.m. for total anthocyanin content, and 9 and 17 mg quercetin equivalents/100 grams d.m. for total flavonoid content, respectively. Moreover, the TPCC retention indicated values over 78% for murta juice, and 82% for arrayan juice. Similarly, the AA presented an increase over 2.1 times in relation to the correspondent initial AA value. Thus, the process parameters values were between 69% and 85% for efficiency, 70% and 88% for percentage of concentrate, and 0.72% and 0.88 (kg solutes/kg initial solutes) for solute yield. Therefore, this work provides insight about CBFC on valuable properties in fresh Patagonian berries juices, for future applications in health and industrial scale.

scholarly journals Biocomponents and Antioxidant Activity of Ribes khorasanicum

2018 ◽  
Vol 3 (3) ◽  
pp. 99-103 ◽  
Author(s):  
Mohammad Ehsan Taghavizadeh Yazdi ◽  
Jalil Khara ◽  
Mohammad Reza Housaindokht ◽  
Hamid Reza Sadeghnia ◽  
Sedigheh Esmaeilzadeh Bahabadid ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Sugar Content ◽  
Antioxidant Properties ◽  
Dry Weight ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Bioactive Components ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content ◽  
Biological And Medical Applications

Currently, there have been lots of interests in phytochemicals as bioactive components. The roles of fruit, vegetables, and red pigments in preventing diseases have been partly accredited to the antioxidant properties of their constituent polyphenols, flavonoid, anthocyanins, and etc. Biochemistry parameters including the relative levels of antioxidant activity, total phenolic content, total flavonoid, total anthocyanin, soluble and insoluble sugar content of Ribes khorasanicum, have been calculated in this project. The total anthocyanin content of the investigated Ribes khorasanicum measured to be 62.9 mg/g in dry weight, while displaying high levels when compared to other components, which indicates that the anthocyanin content was the predominant antioxidant components in the investigated plant. This particular plant has the potential to serve as the important source of antioxidant that can be utilized in different biological and medical applications.

scholarly journals Antioxidant Activity, Sugar Content and Phenolic Profiling of Blueberries Cultivars: A Comprehensive Comparison

2018 ◽  
Vol 46 (2) ◽  
pp. 639-652 ◽  
Author(s):  
Onur Tolga OKAN ◽  
İlhan DENİZ ◽  
Nurettin YAYLI ◽  
İhsan Güngör ŞAT ◽  
Mehmet ÖZ ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Sugar Content ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content ◽  
The World ◽  
Comprehensive Comparison

Commercial blueberry production has been a viable industry throughout the world for 95 years; because of blueberry is a good source of antioxidant. Blueberries are especially rich in anthocyanin, a flavonoid with potent antioxidant capacity. The aim of this study was to compare the phenolic quantities, antioxidant activities, anthocyanin, sugar and phenolic compounds of blueberries produced in Turkey with those of similar blueberry varieties produced around the world. As a result of the conducted analysis, the total phenolic content (TPC) amount found in the berries was 77.26-215.12 mg GAE/100 g, the total flavonoid content (TFC) was 30.44-91.69 mg QE/100 g and the total anthocyanin content (TAC) was 43.03-295.06 mg c3-GE/100 g. Examining the antioxidant activities of the berries, DPPH between 1.10-5.65 mg/ml, FRAP between 454.93-36832.96 µmol troloks/100 g, β-Carotene between 40.66-86.48%. It was determined that the natural berries contained much more phenolic compounds and higher antioxidant activity than that of the cultivars The result of HPLC analysis, chlorogenic acid is determined to be the dominant compound in all berries. Furthermore, fructose and glucose are found in all fruits in different quantities while sucrose is found in certain varieties of berries as well. At the end of the performed study the data indicate that wild and cultivars of blueberries are rich sources of antioxidants for local as well international industries importing this fruit for food processing and enormous products.

Utilization of small broken riceberry flour in gluten-free bread

2019 ◽  
Vol 25 (6) ◽  
pp. 515-522
Author(s):  
Numfon Rakkhumkaew ◽  
Yuparat Boonsri ◽  
Arunwadee Sukchum
Keyword(s):  
Xanthan Gum ◽  
Sensory Quality ◽  
Amylose Content ◽  
Rice Flour ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Gluten Free ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content ◽  
Significant Difference

The aim of this study was to develop gluten-free bread formulations based on small broken riceberry flour, by using different ratios of rice flour and xanthan gum. Small broken riceberry and rice flour could be classified as low in amylose content (15.70 g and 20.50 g/100 g dry matter for small broken riceberry and rice flour, respectively). Additionally, small broken riceberry flour contained a total phenolic and total anthocyanin content approximately 500 times higher than that of rice flour. The addition of increased amounts of small broken riceberry flour and xanthan gum resulted in darker coloured gluten-free bread. However, there was no significant difference regarding moisture and specific volume. The increase of small broken riceberry flour and xanthan gum also led to a significant increase in the firmness of bread crumbs. The sensory evaluation showed differences in flavour, texture and overall liking, since adding small broken riceberry flour tended to make gluten-free bread more favourable. Bread containing rice flour and small broken riceberry flour in the ratio of 30:70 and 1.0% xanthan gum was selected on the basis of the sensory quality. Moreover, such bread also contained high levels of total phenolic and anthocyanin content.

scholarly journals A COMPARATIVE STUDY ON EFFECTS OF REFLECTIVE MULCH AS AN ALTERNATIVE TO SOME OTHER PREHARVEST APPLICATIONS TO IMPROVE PHENOLIC COMPOUNDS PROFILE AND ANTHOCYANIN ACCUMULATION OF CV. SYRAH WINE GRAPE (V. vinifera L.)

2020 ◽  
Vol 19 (4) ◽  
pp. 87-93
Author(s):  
Demir Kok ◽  
Erdinç Bal
Keyword(s):  
Phenolic Compounds ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Wine Grape ◽  
Leaf Removal ◽  
Total Anthocyanin ◽  
Basal Leaf ◽  
Grape Quality ◽  
Reflected Light ◽  
Total Anthocyanin Content

In today’s modern viticulture, reflective mulches and summer pruning practices are remarkable tools thatmay facilitate grape growers to increase yield and improve the grape quality. This study aimed to assess howreflective mulch application (RM) affects components of phenolic compounds and anthocyanin of cv. Syrahthe compared to other preharvest applications such as basal leaf removal application (BLR), foliar prolineapplication (PRO) and their various combinations, including applications of basal leaf removal + proline(BLR+PRO), basal leaf removal + reflective mulch (BLR+RM), proline + reflective mulch (PRO+RM) andbasal leaf removal + proline + reflective mulch (BLR+PRO+RM). The study findings demonstrated that reflectivemulch application (RM) may considerably enhance light distribution in the canopy of grapevine byincreasing reflected light from the ground. In the current study, it was observed that combined applicationshad significant roles on improving yield and quality characteristics. In terms of total phenolic compoundscontent, the highest values were obtained from applications of BLR+RM and PRO+RM. Moreover, all applicationshad a rise to crucial increases in total anthocyanin content of cv. Syrah wine grape when the comparedwith C application.

scholarly journals Compositional diversity in fruits of rowanberry (Sorbus aucuparia L.) genotypes originating from seeds

Genetika ◽  
2020 ◽  
Vol 52 (1) ◽  
pp. 55-65
Author(s):  
Mehmet Bozhuyuk ◽  
Sezai Ercisli ◽  
Rayda Ayed ◽  
Tunde Jurikova ◽  
Hafize Fidan ◽  
...  
Keyword(s):  
Vitamin C ◽  
Organic Acids ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Sorbus Aucuparia ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content ◽  
Wild Edible Fruits

Turkey has great ecological, topological and geographical diversity within the country and this diversity has contributed not only to a high genetic diversity, but has also allowed the successful introduction and cultivation of a great number of fruit tree taxa. Turkey is also known to have a great richness of wild edible fruits with regard to variety and biological diversity. Rowanberry or mountain ash (Sorbus aucuparia L.) is one of the wild edible fruits naturally found most parts of Turkey. Present study describes morphological (tree growth habit, fruit color) and biochemical fruit traits (vitamin C, organic acids, specific sugars, total phenolic content, total anthocyanin content, total antioxidant capacity) of 17 seed propagated rowanberry genotypes. We found significant differences among almost all studied parameters. The genotypes had diverse L, chroma and hue values, which found between 28.76-42.38%; 24.11-29.45% and 33.13-42.66%, respectively. Among sugars and organic acids, Glucose and Malic acid were dominant in rowanberry fruits, respectively. Total phenolic content, total anthocyanin content, vitamin C and antioxidant activity varied from 123-189 mg GAE per 100 g, 18-57 mg per 100 g, 25.6-40.2 mg per 100 g and 3.36-6.92 mM trolox equivalent per 100 g of fresh weight (FW) basis. Results suggest using rowanberry fruits in production of functional foods with high biologically active properties.

scholarly journals Phenolics, antioxidative activity and characterization of anthocyanins in berries of blackcurrant interspecific hybrids.

1970 ◽  
Vol 60 (4) ◽  
Author(s):  
Nijolė Anisimovienė ◽  
Jurga Jankauskienė ◽  
Milda Jodinskienė ◽  
Vidmantas Bendokas ◽  
Vidmantas Stanys ◽  
...  
Keyword(s):  
Interspecific Hybrids ◽  
Antioxidative Activity ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Synthetic Antioxidant ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content ◽  
Berry Extracts

The interest in phenols and anthocyanins has increased due to their antioxidant properties and to their potential usage as dietary antioxidants in human nutrition. Total phenols and anthocyanin content, composition and stability in berry extracts of blackcurrant interspecific hybrids, and antioxidative activity of extracts was evaluated. Berries of interspecific hybrids accumulated 530 to 614 mg 100 g(-1) FW of total phenolic compounds, while 621 mg 100 g(-1) FW of phenolics was established in berries of control Ribes nigrum cultivar 'Ben Tirran'. 'Ben Tirran' berries accumulated 444 mg 100 g(-1) FW of anthocyanins and higher amount was identified in berries of interspecific hybrids No. 11-13 (R. nigrum × R. petraeum) and No. 57 (R. nigrum × R. aureum), 522 and 498 mg100 g(-1) FW respectively. Berry extracts of hybrid No. 11-13 distinguished by the highest antioxidative activity (80%) and it was higher than antioxidant activity of 'Ben Tirran' (70%). Antioxidative activity of all tested berry extracts (70-80%) was twice higher compared to synthetic antioxidant BHT (39%). However correlation between phenolics or total anthocyanin content and antioxidative activity degree was not established. Amount of cyanidin 3-O-glucoside and cyanidin 3-O-rutinoside in berries of hybrids No. 57, No. 11-13 and No. 8 ((R. nigrum × R. americanum) × (R. nigrum × R. americanum)) was higher than in berries of 'Ben Tirran'. It was established that cyanidins are more stable anthocyanins in all studied temperature and irradiation conditions. Therefore interspecific hybrids No. 57 and No. 11-13 were the most agronomically valuable hybrids.

scholarly journals Phenotypic and biochemical parameters of four sweet cherry (Prunus Avium L.) cultivars grown in agro-ecological conditions of middle Atlas of Morocco

2019 ◽  
Vol 20 (3) ◽  
pp. 363-379
Author(s):  
Mina El Baji ◽  
◽  
Ossama Kodad ◽  
Hafida Hanine ◽  
Said En-nahli ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Biochemical Composition ◽  
Sweet Cherry ◽  
Prunus Avium ◽  
Total Flavonoid ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Total Polyphenols ◽  
Total Anthocyanin ◽  
Total Anthocyanin Content

Theobjective of thisstudyis to investigate the phenotypic and biochemicalparameters of selectedsweet cherry (Prunus avium) from middle region of Morocco. Themain biochemical composition, contentsof total polyphenols, total flavonoids, total anthocyanins and antioxidant activity, were measured in the fruits of four sweet cherry cultivars (ʻBurlat’, ʻVan’, ʻNapoleon’andʻCerisette’) grown in two locations (“Laanoceur”and “Toufselt”) in the MiddleAtlas. The free radical scavenging activity was evaluated spectrophotometrically using 1,1‒diphenyl‒2‒picrylhydrazine (DPPH)and ABTS assay.The fruit weight, and pulppercentagewerestudied and found to range between 237–329 g, 38.14–42.22%, 39.21–44.36g, and 52.27–57.48%, respectively.The total phenolic and total anthocyanin content rangedfrom305.99 and 306.67 mg EqGal/100g D.W, total flavonoid contents were within the range of 481.73-517.67 mgeqRE/100g D.W, and total anthocyanin contents were between 1.09 and 2.89 mg Eqcyanidin 3-glucoside/100g D.W. Antioxidant activity ranged from 17.18 to 18.11 mg EqTrolox/100g D.W for DPPH assayand from 27.97 to 29.60 mg EqTrolox/100f D.W for ABTS method.The highest values of total anthocyanin content and antioxidant activity (DPPH) were recorded in ʻBurlat’. The highest value of total flavonoid content was found in ʻCerisette’. Cherries from “Laanoceur”and “Toufselt” locations are characterized by similar biochemical composition and antioxidant activity, except for total anthocyanin content that shows slightly elevated values in “Laanoceur”. The close correlation between total phenolic contents and antioxidant activities (r2=0.73) show that antioxidant activity of cherry fruit depends on total polyphenols.

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