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Lipids possess a wide range of biological activities in plants, animals and humans. They also serve as important components of our daily diet and provide both energy and essential fatty acids; they also act as carriers of fat-soluble vitamins and help in their absorption. Lipids are crucial as a heating medium for food processing and affect the texture, mouth feel and flavour of foods. Structured lipids (SL) are triacylglycerols (TAG) modified to alter the fatty acid composition and/or their location in the glycerol backbone via chemical or enzymatic means. SL may offer the most efficient means of delivering target fatty acids for nutritive or therapeutic purposes as well as to alleviate specific disease and metabolic conditions. This document discusses chemistry, composition, classification, function, occurrence in food and biological activities of lipids. It also sheds light on different aspects of structured lipids, including SL applications, synthesis (chemical vs. enzymatic), SL and aquaculture and future considerations for SL.
invasive esophagectomy nowadays is replacing the classic open technique.
Additional studies are needed to confirm its safety and efficacy. Methods:
thirty patients with esophageal carcinoma were enrolled in this study. Patients
were evaluated preoperatively and they underwent thoracoscopic and laparoscopic
procedures for assessment of resectability. Resectablepatients underwent radical
esophagectomy with gastric tube reconstruction through a four-cm neck incision. Results: 17 patients were operable and
13 patients were inoperable. The mean operative time for the whole procedure
was 5.97 ± 1.66 hours. The mean blood loss was 250 ± 138.07
cc. The mean overall hospital stay was 17.47 ± 5.49 daysdays. Common
postoperative complications included pneumonia (13.3%) pleural effusion (6.7%),
cervical anastomotic leakage (10%), and wound infection (13.3%). One patient
died in the early postoperative period. Conclusions:
we conclude that totallyendoscopic (thoracoscopic and laparoscopic)
esophagectomy is feasible and relatively safe technique. Beside its efficacy as
an assessment tool, total esophagectomy and lymphadenectomy could be performed
in the same time.