Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)
- Volume 5 Issue 1
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- Pages.19-24
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- 1976
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- 1226-3311(pISSN)
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- 2288-5978(eISSN)
Studies on the Storage of Apple -(V) On the Harvesting Date of Spur Golden Delicious Apple-
사과저장(貯藏)에 관(關)한 연구(硏究) -(V) Spur Golden Delicious의 수확기(收穫期)에 관(關)하여-
- Park, Nou-Poung (Radiation Utilization Laboratory, Office of Rural Development) ;
- Kim, Yun-Jin (Radiation Utilization Laboratory, Office of Rural Development) ;
- Rhee, Chong-Ouk (Radiation Utilization Laboratory, Office of Rural Development)
- Published : 1976.04.30
Abstract
A determination of proper maturity is a significant factor for a good quality and storage. This study is aimed at a determination of optimum harvest date related to a decisive measuring of maturity in Spur Golden Delicious. In this case, respiratory status and other characteristics are taken as a indicator for maturing determination. The results are as follows. 1. Respiratory rate has been decreased through a fruit development and come to its minimized point on Sep. 25. at last. On the contrary its tendency has been increased after Sep. 25. It is also estimated that the former is pre-climacteric, the latter climacteric rise based on dimacteric minimum Sep. 25. 2. A flesh hardness has maintained comparably high value until Sep. 18. But in the point of climacteric minimum, Sep. 25, curve of flesh firmness has rapidly been broken down, and after Sep. 25, tendency has slowly decreased at the sucessive date. 3. Pectin content, optimum acidity are remarkably decreased after Sep. 25, Oct. 2 respectively. 4. When water soluble sugar content shows to be swung from climacteric minimum, any resonable tendency are not found. 5. In this experiment, optimum harvest time is found by Oct. 2, in time of 145 days after flowering.
사과의 숙도(熟度)는 과실(果實)의 품질(品質)뿐 아니라 저장수명(貯藏壽命)에도 지대한 영향(影響)을 미치고 있어 Spur Golden Delicious의 숙도(熟度)를 정확히 파악, 수확적기(收穫適期)를 구명(究明)하고저 호흡량(呼吸量)과 과실(果實)의 형질(形質)을 지표(指標)로 조사(調査)한바. (1) 호흡(呼吸)은 점차 감소(減少)하여 9월(月) 25일(日)에 최소치(最少値)를 이루고 그 후 상승(上昇)함으로써 9월(月) 25일(日)을 Climacteric minimum으로, 그 이전(以前)을 pre-climacteric기(期)로 그 이후(以後)를 climacteric rise기(期)로 추정(推定)하였다. (2) 경도(硬度)는 9월(月) 18일(日)까지 비교적 높은치(値)를 유지(維持)하였으나, 9月 25日 즉 climacteric minimum에 급강하현상(急降下現象)을 보이고 그 후 감소(減少)는 완만(緩慢)하였다. (3) pectin은 9월(月) 25일(日), 적정산도(滴定酸度)는 10(月) 2일(日) 이후(以後) 현저히 감소(減少)하였다. (4) 그러나 환원당(還元糖)은 climacteric minimum을 기준(基準)으로 증감현상(增減現象)을 인정(認定)할 수 없었다. 따라서 본시험(本試驗)에서 저장과(貯藏果)의 수확적기(收穫適期)는 10(月) 2일(日) 이후(以後)로 추정(推定)되었으며, 이 때는 개화후(開花後) 145일(日)에 해당한다.
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