Nowadays, consumers are demanding for minimally processed, additive-free, high quality, fresh-like andmicrobiologically safe foods. However, as food deterioration is the constant threat along the entire food chain, fo...Nowadays, consumers are demanding for minimally processed, additive-free, high quality, fresh-like andmicrobiologically safe foods. However, as food deterioration is the constant threat along the entire food chain, food preservationremains as necessary today as in the past. In this paper, several citrus essential oils, including sweet orange, lemon and lime essentialoil applied directly in fresh orange juice as a natural preservative, were analyzed for their antimicrobial activity. The antimicrobialactivity of each citrus essential oil was assessed against Saccharomyces cerevisiae, Lactobacillus plantarum and Aspergillus nigerusing broth macrodilution. Among all citrus essential oils tested, sweet orange essential oil with 0.10% concentration showedsignificant antimicrobial activity against microorganisms tested. Hence, it was chosen to be applied in the fresh orange juice. Then,shelf life analysis was conducted during 7 d of storage at 5 ℃ and during 2 d of storage at 25 ℃ using selected concentration of theselected citrus essential oil in the fresh orange juice. Based on the results obtained, the addition of sweet orange essential oil with0.10% concentration was not able to prolong the shelf life of the fresh orange juice according to the Indonesian National Standard（SNI）. However, the formulation of fresh orange juice itself was able to improve its shelf life when compared to the shelf life of thecommercial orange juice.展开更多
This paper presents findings of an experiment for the comparison of sugar concentration in extracted juice of fresh fruit to that of commercially-bottled 100% fruit juice with a “no sugar added” attribute. The goal ...This paper presents findings of an experiment for the comparison of sugar concentration in extracted juice of fresh fruit to that of commercially-bottled 100% fruit juice with a “no sugar added” attribute. The goal of the study was to determine if the sugar content of bottled 100% fruit juice with a “no sugar added” label is equivalent to that of extracted juices of fresh fruits. The reported study was performed to address the potential concern that commercially-bottled 100% fruit juices with “no sugar added” may contain higher sugar content than extracted juice of fresh fruit. The fruit juices that were tested included apple, grapefruit, orange, pineapple, pomegranate, red grape and white grape. All bottled juices and fresh fruits were purchased in Toledo, Ohio, USA during the winter of 2012. The fresh fruits were juiced and three samples were tested for sugar concentration using a Brix refractometer. The same testing protocol was also applied to the bottled 100% fruit juice. Application of the Mann-Whitney test on the experimental data demonstrated no statistically significant difference (p > 0.05). The results suggested that the sugar content in the commercially bottled 100% fruit juice with the “no sugar added” label is an accurate representation of sugar content in the freshly-extracted juice of the corresponding fruit.展开更多
Objectives: The aim of this study was to investigate the effectiveness of dietary intervention with apricots, pomegranate juice or lactic acid fermented sobya on improving the plasma levels of lipid profile parameters...Objectives: The aim of this study was to investigate the effectiveness of dietary intervention with apricots, pomegranate juice or lactic acid fermented sobya on improving the plasma levels of lipid profile parameters and total plasma homocysteine (tHcy) among healthy adults. Design of the study: Thirty-five men and women (28.9 ± 3.0 years) with mean body mass index of 23.5 ± 1.2 kg/m2 were randomly assigned to a dietary intervention study. During the pre-feeding study records of 24-hour food intake, anthropometric measurements and blood sampling were collected for biochemical investigations. Thereafter the volunteers were divided into five groups: a control group (C);the other four groups received daily one of the following supplements: 200 g of deep yellow apricots (Prunus armeniaca) (AF);250 g pomegranate (Punica granatum) juice (PJ);mixture of 100 g (PJ) and 150 g of fermented sobya (FS), (PJ-FS) or 165 g (FS). After completing the three-week dietary intervention, blood samples were collected and blood indices were again evaluated. Biochemical analysis of total lipids (TL), total glycerides (TG), total cholesterol (TC) and high density lipoprotein cholesterol (HDL-C) and tHcy were completed. The low density lipoprotein-cholesterol level and three indices of risk factors were calculated using the appropriate equations. Results: Three-week dietary intervention improved the levels of lipid profile parameters TG, TC, HDL-C and LDL-C as compared to the respective baseline levels and the response of the control group that did not receive any supplement. Consuming (PJ-FS) had a synergistic beneficially added value on some of the above mentioned lipid profile parameters. The mean plasma tHcy concentrations;a marker for occlusive vascular disease was reduced significantly following the three week consumption of (PJ) or (FS), compared with the respective pre-feeding levels. Conclusion: Pomegranate juice (PJ) or lactic acid fermented sobya (FS) or mixture of both are potential natural agents in lowering the plasma levels of lipid profile parameters and tHcy among apparently healthy young women and men, without dyslipidemic symptoms.展开更多
为探讨光照对低温贮藏下非浓缩还原(not from concentrate, NFC)鲜榨橙汁品质的影响,以聚对苯二甲酸乙二醇酯透明包装的NFC鲜榨橙汁成品为试验材料,研究光照对低温贮藏NFC鲜榨橙汁的维生素C、5-羟甲基糠醛、有机酸、柠檬苦素以及挥发性...为探讨光照对低温贮藏下非浓缩还原(not from concentrate, NFC)鲜榨橙汁品质的影响,以聚对苯二甲酸乙二醇酯透明包装的NFC鲜榨橙汁成品为试验材料,研究光照对低温贮藏NFC鲜榨橙汁的维生素C、5-羟甲基糠醛、有机酸、柠檬苦素以及挥发性成分等品质指标的影响。结果表明,与光照处理相比,避光显著减少了低温贮藏的NFC鲜榨橙汁中维生素C、奎尼酸和苹果酸的损失,显著降低了柠檬苦素生成,改变了特征挥发性物质(β-月桂烯、D-柠檬烯、丁酸乙酯、己酸乙酯、己醛、壬醛和癸醛)的浓度。因此,避光有利于保持低温贮藏下NFC鲜榨橙汁的品质,建议企业采用避光材料包装产品,或者透光材料包装的产品在货架销售期间尽量在避光条件下存放。展开更多
文摘Nowadays, consumers are demanding for minimally processed, additive-free, high quality, fresh-like andmicrobiologically safe foods. However, as food deterioration is the constant threat along the entire food chain, food preservationremains as necessary today as in the past. In this paper, several citrus essential oils, including sweet orange, lemon and lime essentialoil applied directly in fresh orange juice as a natural preservative, were analyzed for their antimicrobial activity. The antimicrobialactivity of each citrus essential oil was assessed against Saccharomyces cerevisiae, Lactobacillus plantarum and Aspergillus nigerusing broth macrodilution. Among all citrus essential oils tested, sweet orange essential oil with 0.10% concentration showedsignificant antimicrobial activity against microorganisms tested. Hence, it was chosen to be applied in the fresh orange juice. Then,shelf life analysis was conducted during 7 d of storage at 5 ℃ and during 2 d of storage at 25 ℃ using selected concentration of theselected citrus essential oil in the fresh orange juice. Based on the results obtained, the addition of sweet orange essential oil with0.10% concentration was not able to prolong the shelf life of the fresh orange juice according to the Indonesian National Standard（SNI）. However, the formulation of fresh orange juice itself was able to improve its shelf life when compared to the shelf life of thecommercial orange juice.
文摘This paper presents findings of an experiment for the comparison of sugar concentration in extracted juice of fresh fruit to that of commercially-bottled 100% fruit juice with a “no sugar added” attribute. The goal of the study was to determine if the sugar content of bottled 100% fruit juice with a “no sugar added” label is equivalent to that of extracted juices of fresh fruits. The reported study was performed to address the potential concern that commercially-bottled 100% fruit juices with “no sugar added” may contain higher sugar content than extracted juice of fresh fruit. The fruit juices that were tested included apple, grapefruit, orange, pineapple, pomegranate, red grape and white grape. All bottled juices and fresh fruits were purchased in Toledo, Ohio, USA during the winter of 2012. The fresh fruits were juiced and three samples were tested for sugar concentration using a Brix refractometer. The same testing protocol was also applied to the bottled 100% fruit juice. Application of the Mann-Whitney test on the experimental data demonstrated no statistically significant difference (p > 0.05). The results suggested that the sugar content in the commercially bottled 100% fruit juice with the “no sugar added” label is an accurate representation of sugar content in the freshly-extracted juice of the corresponding fruit.
文摘Objectives: The aim of this study was to investigate the effectiveness of dietary intervention with apricots, pomegranate juice or lactic acid fermented sobya on improving the plasma levels of lipid profile parameters and total plasma homocysteine (tHcy) among healthy adults. Design of the study: Thirty-five men and women (28.9 ± 3.0 years) with mean body mass index of 23.5 ± 1.2 kg/m2 were randomly assigned to a dietary intervention study. During the pre-feeding study records of 24-hour food intake, anthropometric measurements and blood sampling were collected for biochemical investigations. Thereafter the volunteers were divided into five groups: a control group (C);the other four groups received daily one of the following supplements: 200 g of deep yellow apricots (Prunus armeniaca) (AF);250 g pomegranate (Punica granatum) juice (PJ);mixture of 100 g (PJ) and 150 g of fermented sobya (FS), (PJ-FS) or 165 g (FS). After completing the three-week dietary intervention, blood samples were collected and blood indices were again evaluated. Biochemical analysis of total lipids (TL), total glycerides (TG), total cholesterol (TC) and high density lipoprotein cholesterol (HDL-C) and tHcy were completed. The low density lipoprotein-cholesterol level and three indices of risk factors were calculated using the appropriate equations. Results: Three-week dietary intervention improved the levels of lipid profile parameters TG, TC, HDL-C and LDL-C as compared to the respective baseline levels and the response of the control group that did not receive any supplement. Consuming (PJ-FS) had a synergistic beneficially added value on some of the above mentioned lipid profile parameters. The mean plasma tHcy concentrations;a marker for occlusive vascular disease was reduced significantly following the three week consumption of (PJ) or (FS), compared with the respective pre-feeding levels. Conclusion: Pomegranate juice (PJ) or lactic acid fermented sobya (FS) or mixture of both are potential natural agents in lowering the plasma levels of lipid profile parameters and tHcy among apparently healthy young women and men, without dyslipidemic symptoms.
文摘为探讨光照对低温贮藏下非浓缩还原(not from concentrate, NFC)鲜榨橙汁品质的影响,以聚对苯二甲酸乙二醇酯透明包装的NFC鲜榨橙汁成品为试验材料,研究光照对低温贮藏NFC鲜榨橙汁的维生素C、5-羟甲基糠醛、有机酸、柠檬苦素以及挥发性成分等品质指标的影响。结果表明,与光照处理相比,避光显著减少了低温贮藏的NFC鲜榨橙汁中维生素C、奎尼酸和苹果酸的损失,显著降低了柠檬苦素生成,改变了特征挥发性物质(β-月桂烯、D-柠檬烯、丁酸乙酯、己酸乙酯、己醛、壬醛和癸醛)的浓度。因此,避光有利于保持低温贮藏下NFC鲜榨橙汁的品质,建议企业采用避光材料包装产品,或者透光材料包装的产品在货架销售期间尽量在避光条件下存放。
