The aim of our study was to explore the antioxidant potential of Moroccan saffron stigmas(SS) and examine their performance as a natural antioxidant in enhancing the stability and quality properties of edible sunflowe...The aim of our study was to explore the antioxidant potential of Moroccan saffron stigmas(SS) and examine their performance as a natural antioxidant in enhancing the stability and quality properties of edible sunflower oil(SO), with a focus on understanding the critical importance of edible oil stability for predicting quality deterioration during storage. Bearing this in mind, our research was designed to compare the efficacy of three concentrations of dried SS(at 0.2%, 0.3%, and 0.6%) against tocobiol(a synthetic antioxidant) as a positive control(at 0.3% concentration). This comparison was conducted under three distinct storage conditions namely accelerated ageing(60 ℃), exposure to light at ambient temperature, and darkness, to evaluate their impact on preventing severe oxidation and extending oil shelf-life. Oxidation state evolution was evaluated through peroxide value(PV), free fatty acid(FFA), anisidine value(p-AV), K_(270)value(conjugated trienes), total oxidation index(TOTOX), iodine value(IV), and fatty acid composition(FA). Our results revealed notable differences in stability tracking parameters. Specifically, these parameters were higher in samples stored under accelerated conditions, followed by the samples stored in ambient light, while those stored in darkness showed the highest stability among the three storage conditions. Supplementation of sunflower oil with SS and tocobiol significantly enhanced its oxidation stability. Notably, SS exhibited exceptional effectiveness in stabilizing sunflower oil regardless of SS dose, with the highest efficacy observed at 0.6%. This was evidenced by the slower rate of oxidation parameters under various storage conditions, highlighting a superior antioxidant activity compared to both the non-enriched oil and tocobiol-enriched oil. Furthermore, saffron stigmas, used as a natural supplement,contributed to the preservation of polyunsaturated fatty acids, indicating its potential as a robust source of natural antioxidants in sunflower oil. These attributes position SS as a promising alternative to synthetic antioxidants, offering opportunities to enhance the nutritional quality and extend edible oil shelf-life.展开更多
With the development of society and the prosperity of Chinese literature,as a part of China’s soft power,Chinese chil dren literature is faced with the problem of international dissemination.The English version of Ca...With the development of society and the prosperity of Chinese literature,as a part of China’s soft power,Chinese chil dren literature is faced with the problem of international dissemination.The English version of Cao Wenxuan’s Bronze and Sunflow er won Hans Christian Andersen Award,the top award of children’s literature,which is a successful example of such dissemina tion.Therefore,the Chinese-English translation skills employed are worth studying.This paper aims to analyze the skills used to in the translation of short clauses,reiterative locution,simile,parallelism and dingzhen from the perspective of reception theory.It is found that by using such translation skills as omission,alliteration,repetition of prepositions and pronouns,and literal translation,the translator preserves and recreates the effect of the original text in ways that are more acceptable and idiomatic for the target reader.展开更多
The most economical way to overcome flow assurance problems associated with transportation of heavy crude oil through offshore pipelines is by emulsifying it with water in the presence of a suitable surfactant.In this...The most economical way to overcome flow assurance problems associated with transportation of heavy crude oil through offshore pipelines is by emulsifying it with water in the presence of a suitable surfactant.In this research,a novel surfactant,tri-triethanolamine monosunflower ester,was synthesized in the laboratory by extracting fatty acids present in sunflower（Helianthus annuus）oil.Synthesized surfactant was used to prepare oil-in-water emulsions of a heavy crude oil from the western oil field of India.After emulsification,a dramatic decrease in pour point as well as viscosity was observed.All the prepared emulsions were found to be flowing even at 1°C.The emulsion developed with 60%oil content and 2wt%surfactant showed a decrease in viscosity of 96%.The stability of the emulsion was investigated at different temperatures,and it was found to be highly stable.The effectiveness of surfactant in emulsifying the heavy oil in water was investigated by measuring the equilibrium interfacial tension（IFT）between the crude oil（diluted）and the aqueous phase along with zeta potential of emulsions.2wt%surfactant decreased IFT by almost nine times that of no surfactant.These results suggested that the synthesized surfactant may be used to prepare a stable oil-in-water emulsion for its transportation through offshore pipelines efficiently.展开更多
Flavored vegetable oils have attracted more and more attentions from consumers and researchers due to their high oxidative stability and sensory quality.In the present study,the quality indices,chemical composition an...Flavored vegetable oils have attracted more and more attentions from consumers and researchers due to their high oxidative stability and sensory quality.In the present study,the quality indices,chemical composition and frying performance of galangal flavored sunflower oil prepared by infusion method(GFSO-I),combination pressing method(GFSO-C)and direct addition method(GFSO-A)were investigated.The results displayed that the preparation time,the levels for the acid value(AV),peroxide value(PV),p-anisidine value(AnV),total oxidation value(TOTOX),and the values for total polar compounds(TPC),thiobarbituric acid(TBA),K232 and K268 of GFSO-C were prominently low(P<0.05),compared with that of GFSO-I and GFSO-A,while the fatty acid composition of them were similar.In the frying of Chinese Maye(tradional Chinese food,fried dough stick)at 180°C for 30 h,the values for TPC,TBA,K232 and K268,polymer,viscosity and b*of GFSO-C were obviously low(P<0.05),while the value for L*was obviously high(P<0.05),compared with that of GFSO-I and GFSO-A.In the sensory evaluation,the flavor,taste,crispness and overall acceptance of Chinese Maye fried by GFSO-C were better than that of Chinese Maye fried by GFSO-I and GFSO-A.Consequently,GFSO-C is more suitable for cooking,and the combination pressing method is optimal for industrial production of GFSO.展开更多
Oil-producing crops,including Helianthus annuus L.(H.annuus,Sunflower),have been used for the treatment of different human diseases since ancient times.This study aims to determine the antimicrobial and cytotoxic pote...Oil-producing crops,including Helianthus annuus L.(H.annuus,Sunflower),have been used for the treatment of different human diseases since ancient times.This study aims to determine the antimicrobial and cytotoxic potential of different polarities of seeds and flower extracts of locally grown H.annuus by well-established bioassays.To achieve the objects,the plant extracts were prepared from both flowers and seeds powder samples individually with methanol solvent by using a Soxhlet extraction method.The antimicrobial and cytotoxic potential of the flowers and seed extracts were determined by the in vitro diffusion and brine shrimp method(BSL).The results of the antimicrobial potential of both prepared flower and seed extracts of various polarities at different concentrations showed promising potential against the gram-positive and gram-negative bacterial strains,within the range of inhibition zone 0–20 mm.Among the flower extracts,the highest potential was obtained in water extract and the lowest potential was in butanol extract followed by water>ethyl acetate>hexane>methanol>chloroform>butanol extracts.However,from the seed extracts,the highest potential was obtained in water extract and the lowest potential was in the methanol extract followed by water>hexane>butanol>ethyl acetate>chloroform>methanol extract.On the other hand,the results of cytotoxicity among the flowers extracts against the brine shrimp method where the highest LC50 against brine shrimp nauplii were found to be 31.25μg/mL in water extract and the lowest LC50 was 1345.86μg/mL in chloroform extract followed by water>ethyl acetate>hexane>butanol>methanol>chloroform extract.Similarly,different polarities of seed extracts,the highest LC50 against brine shrimp nauplii was shown to be 109.56μg/mL in butanol extract and the lowest LC50 was 1513.56μg/mL in ethyl acetate extract followed by butanol>hexane>water>methanol>chloroform>ethyl acetate extract.In conclusion,the results showed that both flowers and seeds extracts at various concentrations have promising potential against the positive and negative bacterial strains and the highest potential water extract could be used as natural broad-spectrum antibiotics as herbal medicine to treat different human infectious diseases.展开更多
The efficacy of roasted sesame oil(SO)on the oxidation deterioration of sunflower oil(SFO)during heating was investigated.The concentrations of SO in the SFO were 0,10%,20%,and 30%by volume.The oxidation profile of oi...The efficacy of roasted sesame oil(SO)on the oxidation deterioration of sunflower oil(SFO)during heating was investigated.The concentrations of SO in the SFO were 0,10%,20%,and 30%by volume.The oxidation profile of oil samples was monitored by evaluating the generation of oxidation products and chemical alterations in the oils'composition during heating at frying temperature(180℃).The results showed that the oxidation parameters(free fatty acid,peroxide value,p-anisidine value,total oxidation status,thiobarbituric acid value,and color index)increased significantly in SFO compared to blends or SO during thermal treatment.During heating,the concentration of polyunsaturated fatty acids(PUFA)was reduced with increased level of saturated fatty acids;these results were observed more in SFO than those of SO or blend oils.However,the presence of SO in SFO reduced the decomposition of PUFA.In Fourier-transform infrared spectroscopy,the peak intensities were significantly altered in SFO compared to the blend oils during heating.Based on the most analytical data,it may be agreed that the heating at frying temperature led to the generation of relatively higher contents of oxidative products in SFO compared to blend oils,showing a lower degree of oxidation occurred in blends.The best frying performance for the SFO was achieved by using 30%SO extracted from the roasted sesame seed.This study showed the proper blending of high polyunsaturated oil with SO can produce oil blends with high nutritional values and enhanced stability for daily cooking and deep-frying applications.展开更多
As an important branch of literature, children's literature is exerting a pivotal role in social education. From the perspec-tive of reception aesthetics, English version of Cao Wenxuan's work Bronze and Sunfl...As an important branch of literature, children's literature is exerting a pivotal role in social education. From the perspec-tive of reception aesthetics, English version of Cao Wenxuan's work Bronze and Sunflower is studied from four aspects:horizon of expectation, indeterminacy, aesthetic distance and fusion of horizons. In reception aesthetics, target readers-children are the center of the reading. So translation methods are to satisfy children's demand. It has also been found out that there are some features for children's literature translation include using colloquial words, concise sentence structure and the combination of domestication and foreignization.展开更多
文摘The aim of our study was to explore the antioxidant potential of Moroccan saffron stigmas(SS) and examine their performance as a natural antioxidant in enhancing the stability and quality properties of edible sunflower oil(SO), with a focus on understanding the critical importance of edible oil stability for predicting quality deterioration during storage. Bearing this in mind, our research was designed to compare the efficacy of three concentrations of dried SS(at 0.2%, 0.3%, and 0.6%) against tocobiol(a synthetic antioxidant) as a positive control(at 0.3% concentration). This comparison was conducted under three distinct storage conditions namely accelerated ageing(60 ℃), exposure to light at ambient temperature, and darkness, to evaluate their impact on preventing severe oxidation and extending oil shelf-life. Oxidation state evolution was evaluated through peroxide value(PV), free fatty acid(FFA), anisidine value(p-AV), K_(270)value(conjugated trienes), total oxidation index(TOTOX), iodine value(IV), and fatty acid composition(FA). Our results revealed notable differences in stability tracking parameters. Specifically, these parameters were higher in samples stored under accelerated conditions, followed by the samples stored in ambient light, while those stored in darkness showed the highest stability among the three storage conditions. Supplementation of sunflower oil with SS and tocobiol significantly enhanced its oxidation stability. Notably, SS exhibited exceptional effectiveness in stabilizing sunflower oil regardless of SS dose, with the highest efficacy observed at 0.6%. This was evidenced by the slower rate of oxidation parameters under various storage conditions, highlighting a superior antioxidant activity compared to both the non-enriched oil and tocobiol-enriched oil. Furthermore, saffron stigmas, used as a natural supplement,contributed to the preservation of polyunsaturated fatty acids, indicating its potential as a robust source of natural antioxidants in sunflower oil. These attributes position SS as a promising alternative to synthetic antioxidants, offering opportunities to enhance the nutritional quality and extend edible oil shelf-life.
文摘With the development of society and the prosperity of Chinese literature,as a part of China’s soft power,Chinese chil dren literature is faced with the problem of international dissemination.The English version of Cao Wenxuan’s Bronze and Sunflow er won Hans Christian Andersen Award,the top award of children’s literature,which is a successful example of such dissemina tion.Therefore,the Chinese-English translation skills employed are worth studying.This paper aims to analyze the skills used to in the translation of short clauses,reiterative locution,simile,parallelism and dingzhen from the perspective of reception theory.It is found that by using such translation skills as omission,alliteration,repetition of prepositions and pronouns,and literal translation,the translator preserves and recreates the effect of the original text in ways that are more acceptable and idiomatic for the target reader.
基金the Indian Institute of Technology (Indian School of Mines), Dhanbad for providing necessary laboratory facilities and financial support
文摘The most economical way to overcome flow assurance problems associated with transportation of heavy crude oil through offshore pipelines is by emulsifying it with water in the presence of a suitable surfactant.In this research,a novel surfactant,tri-triethanolamine monosunflower ester,was synthesized in the laboratory by extracting fatty acids present in sunflower（Helianthus annuus）oil.Synthesized surfactant was used to prepare oil-in-water emulsions of a heavy crude oil from the western oil field of India.After emulsification,a dramatic decrease in pour point as well as viscosity was observed.All the prepared emulsions were found to be flowing even at 1°C.The emulsion developed with 60%oil content and 2wt%surfactant showed a decrease in viscosity of 96%.The stability of the emulsion was investigated at different temperatures,and it was found to be highly stable.The effectiveness of surfactant in emulsifying the heavy oil in water was investigated by measuring the equilibrium interfacial tension（IFT）between the crude oil（diluted）and the aqueous phase along with zeta potential of emulsions.2wt%surfactant decreased IFT by almost nine times that of no surfactant.These results suggested that the synthesized surfactant may be used to prepare a stable oil-in-water emulsion for its transportation through offshore pipelines efficiently.
基金the China Agriculture Research System of MOF and MARA.
文摘Flavored vegetable oils have attracted more and more attentions from consumers and researchers due to their high oxidative stability and sensory quality.In the present study,the quality indices,chemical composition and frying performance of galangal flavored sunflower oil prepared by infusion method(GFSO-I),combination pressing method(GFSO-C)and direct addition method(GFSO-A)were investigated.The results displayed that the preparation time,the levels for the acid value(AV),peroxide value(PV),p-anisidine value(AnV),total oxidation value(TOTOX),and the values for total polar compounds(TPC),thiobarbituric acid(TBA),K232 and K268 of GFSO-C were prominently low(P<0.05),compared with that of GFSO-I and GFSO-A,while the fatty acid composition of them were similar.In the frying of Chinese Maye(tradional Chinese food,fried dough stick)at 180°C for 30 h,the values for TPC,TBA,K232 and K268,polymer,viscosity and b*of GFSO-C were obviously low(P<0.05),while the value for L*was obviously high(P<0.05),compared with that of GFSO-I and GFSO-A.In the sensory evaluation,the flavor,taste,crispness and overall acceptance of Chinese Maye fried by GFSO-C were better than that of Chinese Maye fried by GFSO-I and GFSO-A.Consequently,GFSO-C is more suitable for cooking,and the combination pressing method is optimal for industrial production of GFSO.
文摘Oil-producing crops,including Helianthus annuus L.(H.annuus,Sunflower),have been used for the treatment of different human diseases since ancient times.This study aims to determine the antimicrobial and cytotoxic potential of different polarities of seeds and flower extracts of locally grown H.annuus by well-established bioassays.To achieve the objects,the plant extracts were prepared from both flowers and seeds powder samples individually with methanol solvent by using a Soxhlet extraction method.The antimicrobial and cytotoxic potential of the flowers and seed extracts were determined by the in vitro diffusion and brine shrimp method(BSL).The results of the antimicrobial potential of both prepared flower and seed extracts of various polarities at different concentrations showed promising potential against the gram-positive and gram-negative bacterial strains,within the range of inhibition zone 0–20 mm.Among the flower extracts,the highest potential was obtained in water extract and the lowest potential was in butanol extract followed by water>ethyl acetate>hexane>methanol>chloroform>butanol extracts.However,from the seed extracts,the highest potential was obtained in water extract and the lowest potential was in the methanol extract followed by water>hexane>butanol>ethyl acetate>chloroform>methanol extract.On the other hand,the results of cytotoxicity among the flowers extracts against the brine shrimp method where the highest LC50 against brine shrimp nauplii were found to be 31.25μg/mL in water extract and the lowest LC50 was 1345.86μg/mL in chloroform extract followed by water>ethyl acetate>hexane>butanol>methanol>chloroform extract.Similarly,different polarities of seed extracts,the highest LC50 against brine shrimp nauplii was shown to be 109.56μg/mL in butanol extract and the lowest LC50 was 1513.56μg/mL in ethyl acetate extract followed by butanol>hexane>water>methanol>chloroform>ethyl acetate extract.In conclusion,the results showed that both flowers and seeds extracts at various concentrations have promising potential against the positive and negative bacterial strains and the highest potential water extract could be used as natural broad-spectrum antibiotics as herbal medicine to treat different human infectious diseases.
文摘The efficacy of roasted sesame oil(SO)on the oxidation deterioration of sunflower oil(SFO)during heating was investigated.The concentrations of SO in the SFO were 0,10%,20%,and 30%by volume.The oxidation profile of oil samples was monitored by evaluating the generation of oxidation products and chemical alterations in the oils'composition during heating at frying temperature(180℃).The results showed that the oxidation parameters(free fatty acid,peroxide value,p-anisidine value,total oxidation status,thiobarbituric acid value,and color index)increased significantly in SFO compared to blends or SO during thermal treatment.During heating,the concentration of polyunsaturated fatty acids(PUFA)was reduced with increased level of saturated fatty acids;these results were observed more in SFO than those of SO or blend oils.However,the presence of SO in SFO reduced the decomposition of PUFA.In Fourier-transform infrared spectroscopy,the peak intensities were significantly altered in SFO compared to the blend oils during heating.Based on the most analytical data,it may be agreed that the heating at frying temperature led to the generation of relatively higher contents of oxidative products in SFO compared to blend oils,showing a lower degree of oxidation occurred in blends.The best frying performance for the SFO was achieved by using 30%SO extracted from the roasted sesame seed.This study showed the proper blending of high polyunsaturated oil with SO can produce oil blends with high nutritional values and enhanced stability for daily cooking and deep-frying applications.
文摘As an important branch of literature, children's literature is exerting a pivotal role in social education. From the perspec-tive of reception aesthetics, English version of Cao Wenxuan's work Bronze and Sunflower is studied from four aspects:horizon of expectation, indeterminacy, aesthetic distance and fusion of horizons. In reception aesthetics, target readers-children are the center of the reading. So translation methods are to satisfy children's demand. It has also been found out that there are some features for children's literature translation include using colloquial words, concise sentence structure and the combination of domestication and foreignization.
