Firmness of Apples Assessed by non Destructive Techniques Compared to MT Firmness and its Consumer Rating
Hoehn. Ernst Franz Gasser, Hans Schaerer, and Daniel Baumgartner
Program and Abstract. 9th Controlled Atmosphere Research Conference (CA2005). Michigan State University, East Lansing, Michigan, USA. July 5-10, 2005. page36
2005
บทคัดย่อ
Firmness of Apples Assessed by non Destructive Techniques Compared to MT Firmness and its Consumer Rating
Four apple cultivars Diwa , Elstar (l – MCP treated and controls) and ldared were stored under ULO conditions foe nine months.After removal from storage they were held at 20ºC for seven days.Firmness of the apples was assessed by non destructive measurements using a Greefa (IFD unit) as well as an Aweta (acustic unit) device.Following this, apples were subjected to consumer testing; one apple per person and each tasting one slice of an apple.On the remaining apple a MT firmness measurement was performed.Furthermore soluble solids content and acidity were determined.Correlation between non destructive and MT firmness was weak, whereas measurements generated by the Greefa and Aweta units concured.MT firmness was more reliable in predicting consumer judgment than the non destructive techniques.L-MCP Elstar were firmer than the untreated ones and were preferred by the consumers.