竹笋的沙土保藏方法研究

摘要：竹笋在贮藏期间极易发生纤维木质化，霉腐等问题，极大地影响了竹笋的储藏、长途运输和经济效益。本文采用传统工艺中的沙土保鲜法，通过测定竹笋一系列指标的变化，探究沙土对于竹笋的保藏效果。实验研究了适宜竹笋贮藏的温度条件、沙土的粒径大小和湿度等不同的环境条件，设置 10 组不同的环境条件，贮藏采摘后的新鲜竹笋。并在贮藏期间，定时测定竹笋的生理指标数据（失重率，可溶性固形物，还原糖含量等）。研究结果表明，将竹笋贮藏到沙土中能明显降低竹笋的失重率和老化进程。其中，在贮藏温度为 3°C、湿度为 0%的粗砂环境的保鲜效果最为明显，与对照组相比，将竹笋的 10°C 保鲜从 9d 延长至 30d。66277

毕业论文关键词：竹笋；贮藏；沙土保藏；品质

Bamboo Storage Using in Sandy soil

Abstract ： Bamboo shoots are prone to being fiber lignification and moldy during storage. These characteristics affected greatly the storage, long-distance transport and economic benefits of bamboo shoots. In this study, the traditional method of sand and soil preservation in the

agronomic method was used to determine the preservation effect of sand soil on bamboo shoots

storage by measuring the changes of bamboo shoots. The effects of different storage conditions such as the temperature, the size of sands and the humidity of sands were studied. Ten different environmental conditions were set up to preserve, fresh new harvested bamboo shoots. And the physiological index data (weight loss rate, soluble solids content, reducing sugar content, etc.) of bamboo shoots were measured at regular intervals during storage. The results showed that the preservation method of bamboo shoots can using sandy soil can reduce the weight loss rate and aging process of bamboo shoots. Among them, under the conditions: the storage temperature of 3 °C, humidity 0% of the coarse sand environment, the most obvious effect of preservation. Compared with the control group of 10°C environment preservation, the shelf time could be extended from 9_d to 30_d.

Keywords: Bamboo shoots ;quality; sandy soil preservation law

1 引言 1

1.1 竹笋简介 1

1.2 竹笋采摘后生理变化 1

1.3 竹笋保鲜技术的研究进展 2

1.4 本课题研究背景、意义及研究内容 3

1.4.1 本课题研究背景与意义 3

1.4.2 研究内容 3

2 实验材料和方法 4

2.1 实验材料 4

2.1.1 实验仪器 4

2.1.2 实验试剂 4

2.2 测定指标与实验方法 5

2.2.1 失重率的测定 5

2.2.2 褐变的测定 5

2.2.3 硬度的测定 5

2.2.4 还原糖含量的测定 5

2.2.5 可溶性固形物的测定 5

2.2.6 过氧化物酶（POD）活性的测定（愈创木酚法） 6

3 实验结果与讨论 8

3.1 贮藏温度对于雷竹笋贮藏品质的影响 8

3.1.1 不同贮藏温度对竹笋失重率的影响竹笋的沙土保藏方法研究:http://www.751com.cn/shiping/lunwen_74139.html