Taking Victoria Grape as material, studied on the effect of 1000, 500 and 100 μL/L SO2 fumigation treatments on postharvest quality and SO2 residue of fruit stored under 0 °C. The results indicated that after 60 days of storage, all treatment could decrease the decay rate, inhibited the decrease of soluble solids content. The 500 μL/L SO2 fumigation treatment showed an ability to inhibit increasing of MDA content and PPO activity. The SO2 residue in grape pulp treated by 500 μL/L and 100 μL/L of SO2 were 8.31 mg/kg and 6.52 mg/kg respectively which under the FDA safety standard (10 mg/kg) after 60 days storage, while the SO2 residue in 1000 μL/L SO2 fumigation treatment samples was 23.17 mg/kg which beyond the FDA safety standard.

In order to maintain better quality of peach during cold storage and to extend the storage time, effects of different dose of 1-methylcyclopropene (1-MCP) treated of fresh kiwifruit on quality were investigated and the physiochemical attributes were subsequently evaluated during 60 days storage at 0 °C. Results showed that 1-MCP treatment had a high effect on inhibiting the respiratory rate, total soluble solid decrease and maintaining titratable acid content during the end of the storage compared with the non-treated control.Moreover, 1.0 μL/L 1-MCP showed the best effect on maintaining the quality and extending storage life.

Taking Red Grape as material, studied on the effect of SO2interval fumigation treatments on postharvest quality and SO2residue of fruit stored under 0 °C. The results indicated that after 120 days of storage, all treatment could decrease the decay rate, inhibited the decrease of soluble solids content and titratable acid, and the SO2interval fumigation showed a stronger ability compared with convention fumigation. The SO2residue in grape pulp in TR2 group was14.5mg·kg-1which beyond the FDA safety standard (10 mg·kg-1) and bleaching rate was 7.8% higher than TR1 and control group.

Using the Fiber Quantity Analyzer (FQA) for analysis of the paper pulp fiber moving in the Cylindrical Hydrocyclone, making use of the way of Limited Element Analysis and Calculation Fluid Dynamic for the numerical simulation of the velocity distribution of moving process. Based on the mathematic model of it, point out the idea of design on the geometric parameters of the cylindrical hydrocyclone. The result show, the suit length of pole is benefit to improve the machine handle ability and separation efficiency.

Labeling systems for niche market food products is becoming increasingly important to address consumers' expectations. Yak meat is 'green' product from natural extensive rangeland on Qinghai-Tibetan plateau. A trace technique is essential for consumers to know the origin of yak meat. In the current study, mineral fingerprints were investigated for their potential to classify yak meat according to geographical origin. The concentration of more than 50 mineral contents in 24 yak meat samples from three regions on Qinghai-Tibetan plateau were analyzed by ICP-MS. Multivariate statistical analyses were used to identify the most relevant indicators of origin. Seven elements (Na, As, Ni, Se, Rb, Cd and Ti) were selected for further routine analyses based on the significant origin differences (P<0.05). The three minerals (Se, Rb, Ti) were selected by statistics analysis and established discriminant model for yak meat traceability. Linear discriminate analysis gave an overall correct classification rate of 91.7% and cross-validation rate of 87.5%. These results demonstrate the usefulness of multi-element fingerprints as indicators for authenticating the geographical origin of yak meat.