Effect of Juice Extraction Methods on the Physicochemical Characteristics of Haskap Berry (Lonicera caerulea L.) Products

2016 ◽  
Vol 12 (3) ◽  
pp. 220-229
Author(s):  
Rabie Khattab ◽  
Amyl Ghanem ◽  
Marianne Su-Ling Brooks
2016 ◽  
Vol 5 (6) ◽  
pp. 67 ◽  
Author(s):  
Rabie Khattab ◽  
Amyl Ghanem ◽  
Marianne Su-Ling Brooks

The effect of freezing, frozen storage (–18 °C for 6 months), thawing, juice extraction, and hot-air drying on the anthocyanin profile of haskap berry (Lonicera caerulea L.) was investigated using RP-HPLC. Five anthocyanins (ANCs) were quantified: cyanidin 3,5-di-glucoside (4.27 % of the total ANCs), cyanidin 3-glucoside (89.39 %), cyanidin 3-rutinoside (2.07 %), pelargonidin 3-glucoside (0.83 %), and peonidin 3-O-glucoside (3.44 %). Freezing did not significantly affect the content of individual ANCs, while frozen storage resulted in significant reductions (16.00-24.50 %). Thawing the frozen berries in the microwave oven retained the highest content of different ANCs. The highest degradation, however, occurred while thawing at room temperature. Extracting juice from the berries significantly reduced the content of individual ANCs. Drying the berries to 25 % moisture content at 60, 100, and 140 ºC reduced the individual ANCs by 73.85-76.19, 78.46-80.95 and 90.77-95.40 %, respectively. The overall stability of the five ANCs during storage and processing is summarized by the following trend (from most to least stable): peonidin 3-O-glucoside > pelargonidin 3-glucoside > cyanidin 3,5-diglucoside > cyanidin 3-rutinoside > cyanidin 3-glucoside.


2018 ◽  
Vol 73 ◽  
pp. 220-227 ◽  
Author(s):  
Hongmei Shang ◽  
Shilun Chen ◽  
Ran Li ◽  
Haizhu Zhou ◽  
Hongxin Wu ◽  
...  

2021 ◽  
Vol 12 (2) ◽  
pp. 283-293
Author(s):  
Vicente Tirado-Kulieva ◽  
Sheyla Atoche-Dioses ◽  
Ernesto Hernández-Martínez

Globally, a large amount of agri-food waste is generated as a result of industrial processes or direct consumption of raw materials, and when discarded, they represent a factor of environmental pollution. Mango by-products have a great bioactive potential, especially because they contain phenolic compounds in which mangiferin predominates, in addition to a great variety of phenolic acids, flavonoids and tannins, which confer antioxidant effects against cancer, cardiovascular and neurological diseases, among others. In addition, it was demonstrated that they have an effect against a broad microbial spectrum, including multiple pathogenic bacteria and fungi such as Escherichia coli and Candida albicans, respectively. According to the literature, mango peel and seed extracts also have potential as an additive, by influencing the sensory and physicochemical characteristics of foods, which has been proven by their addition to products such as shrimp, yogurt and cookies. Considering the importance of mango by-products, this work focused on their phenolic properties, the mechanism of antioxidant and antimicrobial action, their fields of pharmacological and food applications, in addition to evaluating their extraction methods and proposing microencapsulation as a suitable technology to avoid their degradation and control their release under appropriate conditions. Based on the analysis performed, further studies are suggested on the application in different foods and to evaluate the interaction of polyphenols with the compounds of the product, to avoid possible negative effects. It is also recommended to experiment with the use of combined technologies to improve results during extraction and microencapsulation.


2000 ◽  
Vol 83 (5) ◽  
pp. 1076-1081 ◽  
Author(s):  
Mara Gennari ◽  
Lucia Ferraris ◽  
Michèle Nègre ◽  
Alessandro Cignetti

Abstract Two extraction methods were developed for the determination of triasulfuron in soil. Method I included extraction with methanol–phosphate buffer at pH 7 (2 + 1, v/v), liquid–liquid partition with dichloromethane, and cleanup on a liquid chromatographic Si adsorption solid-phase extraction tube. In Method II, Extrelut was added and the sample was then extracted with acetonitrile. In both cases, the extracts were analyzed by liquid chromatography (LC) with UV detection and the LC peak was confirmed by LC/mass spectrometry (MS). The 2 methods were tested on 3 soils having different physicochemical characteristics. Method I gave 83% average recovery and a determination limit of 0.4 μg/kg soil. Method II gave 67% average recovery and a determination limit of 2 μg/kg soil. Examples of application of Method I to field samples are reported.


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