The changes in total polyphenolics in elderberry (Sambucus nigra) following treatment with various doses of pulsed ultraviolet rays (UV) were investigated. Four pulsed UV durations (5, 10, 20, 30 seconds) at three ene...The changes in total polyphenolics in elderberry (Sambucus nigra) following treatment with various doses of pulsed ultraviolet rays (UV) were investigated. Four pulsed UV durations (5, 10, 20, 30 seconds) at three energy dosages (4500, 6000, 11,000 J/m2/pulse) were considered for the research. All treated elderberry fruits were incubated for 24 h at room temperature (25℃) following treatment to ensure enough response duration for enhanced development of polyphenols by the berries. The highest increase in total phenolics around 50% was found with 11,000 J/m2/pulse for a 10 seconds treatment while nearly 40% increase in total phenolics was found at an energy dosage of 11,000 J/m2/pulse after 5 seconds exposure. Even though most of the treatments indicated an increase in total polyphenols, some treatment expressed a decrease in phenolics content when compared to untreated fruits.展开更多
The use of biodegradable polymers and natural additives is a sustainable strategy to prevent oxidation and extend food shelf life.In this study,a gelatin-sodium caseinate composite film containing elderberry extract w...The use of biodegradable polymers and natural additives is a sustainable strategy to prevent oxidation and extend food shelf life.In this study,a gelatin-sodium caseinate composite film containing elderberry extract was newly developed and characterized.The film with the most optimal oxygen permeability and water vapor permeability was selected by blending gelatin(G)and sodium caseinate(S)at a 50:50 ratio(w/w).The addition of 0.5%(w/w)elderberry extract(EE)improved the oxygen barrier properties and gave the edible film a high potential for food quality preservation.Elongation was improved(105.82%±9.36%)and DPPH radical scav-enging analysis revealed a significantly strong antioxidant activity(P<0.05).FT-IR spectra and SEM indicated that it is the result of polyphenols and other EE components interacting with the protein matrix.The developed film was applied as a coating and significantly prevented weight loss of pork after 12 h at room temperature(Control,0.18%±0.01%;G50:SC50,0.11%±0.01%;G50:SC50+EE0.5,0.11%±0.02%;P<0.05).The EE-containing G50:SC50-coated pork showed the lowest lipid oxidation as measured by TBARS after 36 h(0.36±0.06 mg MDA/kg sample).This finding suggested that it was related to polymorphic mechanisms,including radical scavenging and oxygen contact blocking.Therefore,protein-based films containing natural extract have the potential for an antioxidant packaging strategy.展开更多
Throughout human civilization, elderberry (Sambucus nigra L.) has been used as a traditional drug and addition to various dishes. Although it is a widespread plant species, it is still being researched and rarely used...Throughout human civilization, elderberry (Sambucus nigra L.) has been used as a traditional drug and addition to various dishes. Although it is a widespread plant species, it is still being researched and rarely used to obtain new products. In this study, we focused on the chemical and phytochemical composition and biological and pharmacological effects of elderberry wine, obtained by applying different temperature treatments (without temperature treatment – W1;60℃, 5 min – W2;60℃, 10 min – W3;and 70℃, 5 min – W4 ). HPLC-MS/MS and spectrophotometric techniques determined the chemical and phytochemical profiles of obtained wines. The main compounds in analyzed wines were p-Hydroxybenzoic, protocatechuic and chlorogenic acids, quercetin, quercetin-3-O-hexoside, and rutin . To assess the biological potential, antioxidant, neuroprotective (acetyl- and butyrylcholinesterase inhibition), antityrosinase, and antidiabetic (amylase inhibition and glucosidase inhibition) abilities were examined. Wine W4 showed the strongest antioxidant activity, which correlated well with the high phenol content. The best inhibitory effect of β-glucosidase was observed in wine W3 . However, the most potent tyrosinase inhibitor was wine W4 . The presented results prove elderberry wine's high biological and industrial potential and open new avenues for formulating new products that could be brought to market.展开更多
文摘The changes in total polyphenolics in elderberry (Sambucus nigra) following treatment with various doses of pulsed ultraviolet rays (UV) were investigated. Four pulsed UV durations (5, 10, 20, 30 seconds) at three energy dosages (4500, 6000, 11,000 J/m2/pulse) were considered for the research. All treated elderberry fruits were incubated for 24 h at room temperature (25℃) following treatment to ensure enough response duration for enhanced development of polyphenols by the berries. The highest increase in total phenolics around 50% was found with 11,000 J/m2/pulse for a 10 seconds treatment while nearly 40% increase in total phenolics was found at an energy dosage of 11,000 J/m2/pulse after 5 seconds exposure. Even though most of the treatments indicated an increase in total polyphenols, some treatment expressed a decrease in phenolics content when compared to untreated fruits.
基金carried out with the support of“Cooperative Research Program for Agriculture Science&Technology Development(PJ01608201)”,Rural Development Administration,Republic of Korea.
文摘The use of biodegradable polymers and natural additives is a sustainable strategy to prevent oxidation and extend food shelf life.In this study,a gelatin-sodium caseinate composite film containing elderberry extract was newly developed and characterized.The film with the most optimal oxygen permeability and water vapor permeability was selected by blending gelatin(G)and sodium caseinate(S)at a 50:50 ratio(w/w).The addition of 0.5%(w/w)elderberry extract(EE)improved the oxygen barrier properties and gave the edible film a high potential for food quality preservation.Elongation was improved(105.82%±9.36%)and DPPH radical scav-enging analysis revealed a significantly strong antioxidant activity(P<0.05).FT-IR spectra and SEM indicated that it is the result of polyphenols and other EE components interacting with the protein matrix.The developed film was applied as a coating and significantly prevented weight loss of pork after 12 h at room temperature(Control,0.18%±0.01%;G50:SC50,0.11%±0.01%;G50:SC50+EE0.5,0.11%±0.02%;P<0.05).The EE-containing G50:SC50-coated pork showed the lowest lipid oxidation as measured by TBARS after 36 h(0.36±0.06 mg MDA/kg sample).This finding suggested that it was related to polymorphic mechanisms,including radical scavenging and oxygen contact blocking.Therefore,protein-based films containing natural extract have the potential for an antioxidant packaging strategy.
基金financially supported by the Serbian Ministry of Education,Science and Technological Development,(Project No.,451-03-68/2022-14/200134)。
文摘Throughout human civilization, elderberry (Sambucus nigra L.) has been used as a traditional drug and addition to various dishes. Although it is a widespread plant species, it is still being researched and rarely used to obtain new products. In this study, we focused on the chemical and phytochemical composition and biological and pharmacological effects of elderberry wine, obtained by applying different temperature treatments (without temperature treatment – W1;60℃, 5 min – W2;60℃, 10 min – W3;and 70℃, 5 min – W4 ). HPLC-MS/MS and spectrophotometric techniques determined the chemical and phytochemical profiles of obtained wines. The main compounds in analyzed wines were p-Hydroxybenzoic, protocatechuic and chlorogenic acids, quercetin, quercetin-3-O-hexoside, and rutin . To assess the biological potential, antioxidant, neuroprotective (acetyl- and butyrylcholinesterase inhibition), antityrosinase, and antidiabetic (amylase inhibition and glucosidase inhibition) abilities were examined. Wine W4 showed the strongest antioxidant activity, which correlated well with the high phenol content. The best inhibitory effect of β-glucosidase was observed in wine W3 . However, the most potent tyrosinase inhibitor was wine W4 . The presented results prove elderberry wine's high biological and industrial potential and open new avenues for formulating new products that could be brought to market.
