Abstract: The present invention relates to a method for detecting a protein having a disulfide bond or an allergen protein, comprising: protecting by chemically modifying a free SH group of a protein in a sample to be tested; cleaving a disulfide bond of the free SH group-protected protein to expose SH groups; and detecting the exposed SH groups.

Abstract: Disclosed is an automatic irrigation system of the simplified structure which can intermittently supply water (and liquid fertilizer) required by farmer products under the water saving condition depending on the weather condition of the day (an amount of solar beam in a day) without relation to the size of irrigation area. In this automatic irrigation system, water of the water source is pumped up with a motor pump which is driven with electric power generated by a solar panel and is then stored in a reserving tank. When a predetermined amount of water is stored in the reserving tank, a water draining means continuously drains all the water in the reserving tank. This cycle is repeated in proportion to an amount of solar beam in a day. The water is then guided to the irrigation area with a tube irrigation system. An amount of water to be irrigated is proportional to that of solar beam in a day. A liquid fertilizer mixing device is also used simultaneously when it is required.