碩士 / 國立屏東科技大學 / 食品科學系所 / 106 / Sakura Shrimp is a special product of Pingtung's Donggang area, and it is also a rare aquatic resource that have in only a few sea areas around the world. The current processing methods of small shrimp are mostly separated by manual methods. Long time sorting, will easy to cause human body tiredness and making the separation quality worse. This reseach is try to develop a novel separation technology by vibration and wind blowing processing to achieve the purpose of shrimp separating. This result shows that the best structure of vibration screen module has three layers, the hole spacing of first screen layer is a 1.5 × 10 cm long strip hole, the second layer is a 2.5 × 2.5 cm square hole, and the third layer is a 1 × 1 cm square hole. The shrimp separating efficiency can reach 93% when the optimum operating conditions of vibration frequency and wind speed are 60 Hz and 20 m/s respectively. Combined with 0.15% colloidal ice pack and frozen storage at -40°C, shrimp can be stored for over 120 days, and color brightness value and redness “a” value are not easily changed. After 120 days of storage, the volatile-based ground-state nitrogen value was 16.8 mg/100 g, the thiobarbituric acid value was 0.71 mgMDA/kg, and the total bacterial count was 4.32×103 CFU/g. All of these indicators were in compliance with the specifications. Compared with the ice-free procedure, shrimp meat has better texture, better elasticity, better water holding capacity and less drip loss. The vibration separation technology and colloidal ice pack processing procedures were developed in this study. These novel procedures compared with the old procedure can improve the shrimp separation efficiency, shrimp storage quaility and the ease of use of shrimp. These procedures also can be applied on the other aquaculture processed foods.
| Identifer | oai:union.ndltd.org:TW/106NPUS5253009 |
| Date | January 2018 |
| Creators | Yen, Tzu-Yu, 顏茲羽 |
| Contributors | Yang, Chi-Ching, 楊季清 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 86 |
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