Characterization of the Lipid Oxidation Process of Robusta Green Coffee Beans and Shelf Life Prediction during Accelerated Storage.

The lipid oxidation process of Robusta green coffee beans was characterized during accelerated storage for 20 days at 40 °C, 50 °C, and 60 °C. The conventional oxidation indexes and fatty acid compositions were evaluated, and the shelf life of the green coffee beans was predicted using the Arrhenius model. The acid value, iodine value, peroxide value, total oxidation value, thiobarbituric acid reactive substances, and free fatty acid content increased throughout storage, while the moisture content, p-anisidine value, and unsaturated fatty acid content decreased, which suggests that lipid oxidation occurred during accelerated storage. The predicted shelf life of green coffee bean samples were 57.39 days, 44.44 days, and 23.12 days when stored at 40 °C, 50 °C, and 60 °C, respectively. This study provided scientific evidence of the impact of lipid oxidation on the loss of quality during the accelerated storage of green coffee beans.

Diagnosis and treatment of functional pancreatic dndocrine tumor / 中华内分泌外科杂志

Objective To explore the diagnosis and management of functional pancreatic endocrine tumor.Methods Clinical data of 19 cases of functional pancreatic endocrine tumor were retrospectively analyzed.Results 15 cases of insulinoma,2 cases of gastrinoma and 2 cases of glucagonoma were qualitatively diagnosed.The positive rate of preoperative diagosis for type B ultrasonic inspection,CT,MRI,EUS,selective portovenous sampling and intraoperative type B ultrasonic inspection was 15.8％ (3/19),67.5％ (10/16),71.4％ (5/7),87.5％ (7/8),100％(2/2) and 85.7％(6/7) respectively.Of the total 19 cases,7 cases underwent open surgery,11 cases unde rwent laparoscopic surgery,and one case didn't undergo any surgery as liver metastasis had occurred when glucagonoma was diagnosed.The operation methods included tumor enucleation (n=13),distal pancreatic resection (n=3),distal pancreatic resection plus splenectomy (n=1),and pancreatic head resection with duodenum preserved (n=1).Conclusions The measurement of serum insulin,gastrin and glucagon is the main basis for qualitative diagonosis of pancreatic endocrine tumor.Two stage spinal CT thin scanning is the main method for tumor location.Intraoperative type B ultrasonic inspection is the supplement to preoperative location.Tumor enucleation is the main choice of treatment.

Primary closure of choledochostomy with antegrade biliary stent drainage after common bile duct exploration / 中国普通外科杂志

Objective To explore the method and effect of primary closure of choledochostomy with placement of a modified biliary stent after common bile duct exploration. Methods Open or laparoscopic common bile duct exploration was done in 39 patients with both gallbladder and common bile duct (CBD) stones. After extraction of stones, an 8F J-stent (pigtailed) was placed in the CBD and into the duodenum over a guide wire. The proximal end of the stent was secured to the CBD wall with rapidly absorbable suture. The CBD incision was primarily closed. Results The stent dislodged and was discharged with stool at the 13th (10-18) postoperative day . Three patients developed transient hyperamylasemia in the immediate postoperative period. None of the patients had complications of bile leak, stent occlusion, early stent dislodgement, or stent retraction into the CBD. Conclusions Placement of a self-release biliary J-stent in CBD and into the duodenum during common bile duct exploration is easier to manipulate with the help of choledochoscpe and guide wire. It is safe and cost-effective, therefore, it can expand the indications for primary closure of CBD incision, and reduce the complications related to T-tubes.