Effects of low temperature and INA bacteria on the change of chlorophyll a fluorescence inyoung fruit from two apricot cultivars were investigated. Low temperature decreased the potential activity(Fv/Fo) ,conversion e...Effects of low temperature and INA bacteria on the change of chlorophyll a fluorescence inyoung fruit from two apricot cultivars were investigated. Low temperature decreased the potential activity(Fv/Fo) ,conversion efficiency of primary light energy (Fv/Fm)of PS Ⅱ and photochemical quenching (qP) inyoung fruit of two apricot cultivars. Low temperature enhanced non-photochemical quenching qN, decreasingthe quantum yield of photosynthetic electron transfer. The presence of ice nucleating active (INA) bacteria in-tensified the effects of low temperature, raised the injury temperature threshold from - 4℃ to - 2 - - 3℃.INA bacteria can be a factor to induce frost susceptibility of apricot fruit. The amount of damaged PS Ⅱ activi-ty center was related to apricot fruit size and cultivar.展开更多
According to WHO, eating at least five portions of fruit and vegetables a day at an early age is protective against cancers, cardiovascular diseases and diabetes. The purpose of this study was to determine among secon...According to WHO, eating at least five portions of fruit and vegetables a day at an early age is protective against cancers, cardiovascular diseases and diabetes. The purpose of this study was to determine among secondary school pupils in the city of Bobo-Dioulasso, the level of observation of this recommendation and the associated factors. Methods: This was a cross-sectional study conducted from March to April 2016, among secondary school pupils in 1st Form, 4th Form and 7th Form of public and private secondary schools. The diet survey methods were the recalling of the last 24 hours associated with intake frequency questionnaire. An intake of less than one fruit (or a slice of a big fruit) per day and for vegetables, less than one portion of raw or cooked vegetables per day was considered insufficient. Results: A total of 1993 pupils were surveyed. The mean age was 17.5 ± 3.6 years and the sex ratio 0.7;75.4% and 90.0% of pupils had insufficient daily intake of fruit and vegetables respectively. The determinants of this consumption deficiency were: Sex (male, OR = 1.7 (1.3 - 2.2)), secondary school (public, OR = 1.6 (1.3 - 2.0)), class (4th Form, OR = 2.5 (1.5 - 4.2)/7th Form, OR = 3.7 (2.7 - 5.1)), the mother (thin build, OR = 3.2 (2.0 - 5.3)/overweight/obesity, OR = 2.8 (1.6 - 4.7)) and physical inactivity (OR = 1.5 (1.2 - 2.0)). Conclusion: The promotion of a healthy diet among secondary school pupils should take into account the type of school, sex, educational level, physical activity and mothers’ influence.展开更多
文摘Effects of low temperature and INA bacteria on the change of chlorophyll a fluorescence inyoung fruit from two apricot cultivars were investigated. Low temperature decreased the potential activity(Fv/Fo) ,conversion efficiency of primary light energy (Fv/Fm)of PS Ⅱ and photochemical quenching (qP) inyoung fruit of two apricot cultivars. Low temperature enhanced non-photochemical quenching qN, decreasingthe quantum yield of photosynthetic electron transfer. The presence of ice nucleating active (INA) bacteria in-tensified the effects of low temperature, raised the injury temperature threshold from - 4℃ to - 2 - - 3℃.INA bacteria can be a factor to induce frost susceptibility of apricot fruit. The amount of damaged PS Ⅱ activi-ty center was related to apricot fruit size and cultivar.
文摘According to WHO, eating at least five portions of fruit and vegetables a day at an early age is protective against cancers, cardiovascular diseases and diabetes. The purpose of this study was to determine among secondary school pupils in the city of Bobo-Dioulasso, the level of observation of this recommendation and the associated factors. Methods: This was a cross-sectional study conducted from March to April 2016, among secondary school pupils in 1st Form, 4th Form and 7th Form of public and private secondary schools. The diet survey methods were the recalling of the last 24 hours associated with intake frequency questionnaire. An intake of less than one fruit (or a slice of a big fruit) per day and for vegetables, less than one portion of raw or cooked vegetables per day was considered insufficient. Results: A total of 1993 pupils were surveyed. The mean age was 17.5 ± 3.6 years and the sex ratio 0.7;75.4% and 90.0% of pupils had insufficient daily intake of fruit and vegetables respectively. The determinants of this consumption deficiency were: Sex (male, OR = 1.7 (1.3 - 2.2)), secondary school (public, OR = 1.6 (1.3 - 2.0)), class (4th Form, OR = 2.5 (1.5 - 4.2)/7th Form, OR = 3.7 (2.7 - 5.1)), the mother (thin build, OR = 3.2 (2.0 - 5.3)/overweight/obesity, OR = 2.8 (1.6 - 4.7)) and physical inactivity (OR = 1.5 (1.2 - 2.0)). Conclusion: The promotion of a healthy diet among secondary school pupils should take into account the type of school, sex, educational level, physical activity and mothers’ influence.
