Trichloroacetimidate-Ethyl-d
Deacetylation of the resulting disaccharide derivative, followed by benzylidenation, and condensation with 2,3,4-trio-O-acetyl-alpha-L-rhamnopyranosyl trichloroacetimidate () afforded ethyl 4-O-[3-O-allyl-4,6-O-benzylidene-2-O-(2,3,4-trio-O-acetyl- alpha-L-rhamnopyranosyl)-beta-D-galactopyranosyl]-2,3-di-O-benzyl-1-thio - alpha-L-rhamnopyranoside (11). 2'-Fucose lactose of 11, followed by benzylation, selective benzylidene ring-opening, and coupling with 2,3,4,6-tetra-O-acetyl-alpha-D-glucopyranosyl trichloroacetimidate (15) gave ethyl 4-O-[3-O-allyl-6-O-benzyl-4-O-(2,3,4,6- tetra-O-acetyl-beta-D-glucopyranosyl)-2-O-(2,3,4-tri-O-benzyl-alpha-L- rhamnopyranosyl)-beta-D-galactopyranosyl]-2,3-di-O-benzyl-1-thio-alpha-L - rhamnopyranoside (16). Deacetylation of 16 followed by benzylation, deallylation, and acetylation yielded ethyl 4-O-[3-O-acetyl-6-O-benzyl-4-O-(2,3,4,6-tetra-O-benzyl-beta-D-glucopy ran osyl)- 2-O-(2,3,4-tri-O-benzyl-alpha-L-rhamnopyranosyl)-beta-D-galactopyranosyl ]-2,3- di-O-benzyl-1-thio-alpha-L-rhamnopyranoside (). human milk oligosaccharides derived from , when coupled with 3-benzyloxycarbonylamino-1-propanol, gave the beta-glycoside (21 beta) as the major product. Deacetylation of 21 beta followed by condensation with 1,3-di-O-benzylglycerol 2-(triethylammonium phosphonate) Academic stress levels were positively associated with sweet food consumption OBJECTIVE The objectives of the present study were to identify the association among levels of persistent academic stress, appetite, and dietary habits and to determine the specific types of sweet foods consumed by Korean high-school students according to their academic stress levels.METHODS The study participants included 333 high-school students in the th to 12th grades in Kyunggi Province, Korea.
The level of academic stress was scored with a 75-item academic stress scale and was categorized as high, medium, or low. A food-frequency questionnaire was used to measure the sugar intake from RESULTS Korean high-school students with a high academic stress level had larger meals than the other students. Compared with students with low academic stress, the students with high academic stress had a higher frequency of sugar intake from the following food types confectionaries, candies and chocolates, breads, and flavored milk. Moreover, compared with students with low academic stress, the students with high academic stress had a higher total intake of sugar from the following food types confectionaries, candies, chocolates, flavored milk, traditional Korean beverages, and spicy, sweet, and fried rice CONCLUSION Unhealthy stress-related food choices may compromise high-school students' health and contribute to their morbidity. The findings of the present study could be used to help nutritionists develop effective strategies for nutritional education and counseling to improve adolescent health.Purification of human milk bile salt-activated lipase.A modified procedure for a large-scale purification of human milk bile salt-activated lipase (BAL) has been devised.
An initial step used cholate-Sepharose affinity chromatography for the partial purification of the enzyme followed by the removal of cholate with a Bio-Rex 5 anion-exchange resin. The final step of purification used heparin-Sepharose affinity chromatography. This procedure of purification resulted in a -fold purification of BAL from human skim milk and a specific activity of - mumolminmg with p-nitrophenyl acetate as substrate. From 4 ml of human skim milk, approximately mg of purified enzyme could be obtained. The N-terminal-region amino acid sequence of the purified BAL was determined as follows Ala-Lys-Leu-Gly-Ala-Val-Tyr-Thr-Glu-Gly-Lys-Phe-Val-Glu-Gly-Val-Asn-Lys-Lys-Leu-Gly-Leu-. Despite the finding that BAL interacts with heparin-Sepharose, soluble heparin had no effect on BAL activity. The possible physiological role of BAL-heparin Missed Opportunities The Cost of Suboptimal Breast Milk Feeding in the Neonatal [Development of salivary and pancreatic amylase in children during the 1st year The protective effect of breast feeding in relation to sudden infant death syndrome (SIDS) I.
The effect of human milk and infant formula preparations on binding of toxigenic Staphylococcus aureus to epithelial cells.
