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Study Of Factors Affecting The Quality Of Low Sugar Dried Apricot

Posted on:2015-02-18Degree:MasterType:Thesis
Country:ChinaCandidate:Z Q DongFull Text:PDF
GTID:2181330467973997Subject:Food processing and safety
Abstract/Summary:PDF Full Text Request
Use fresh apricots as the raw material; dry them in the sun after pretreatment. Study the maturity ofapricots, the additive amount of sodium hydrogen sulfite and the influence to organoleptic quality andresidual quantity made by processing time. The dried apricot slices are sealed packaged by PA/CPPmaterials, and analyze the variation trend of sulfur dioxide during the process of storage. The result showsthat high concentration and long processing time will cause a phenomenon that peel separates from pulp,fruit texture loosen, flaccid and juice external flow. The appearance of over treating dried apricot slicesshrinks severely and is out of shape, the tissue of pulp is not satiation. They are inaptitude for rework. Withthe increase using of sodium hydrogen sulfite and the increase maturity of fresh apricots, the residualquantity of sulfur dioxide in dried apricot slices is gradually increase; the residual quantity will drop offwith the extension of storage time, the downtrend is the same among different maturity. Dried apricot slicesraw material as green apricots under the condition that handling capacity of sodium hydrogen sulfite as2.0g/kg、2.5g/kg、3.0g/kg、3.5g/kg、4.0g/kg, its day loss ratio is0.38%、0.3%、0.3%、0.17%、0.17%;Dried apricot slices raw material as yellow apricots under the condition that handling capacity of sodiumhydrogen sulfite as2.0g/kg、2.5g/kg、3.0g/kg、3.5g/kg、4.0g/kg, its day loss ratio is0.39%、0.32%、0.29%、0.24%、0.16%.To study the factors that influence the quality of fresh apricots, dried apricots as raw material whenapricots. Sensory evaluation of the measured quality of apricots, moisture content, water activity, shearing,sugar, etc. Requires the use of green to yellow rind when fresh apricots, fresh apricots apricot as rawmaterial, the optimal parameters are1.5%Maltooligosugars,0.2%CMC-Na、0.3%Alginate composite ofinsurance agent, and1.0%Sodium,0.6%Sodium dihydrogen phosphate、0.2%Lactate composite ofinsurance agent. Take the second way sugar permeability, most products can be better to keep the flavor.Low-sugar products, plump appearance, color Huang Liang, a good chew toughness. When apricots withdried apricots for the production of raw materials for the optimal parameters, Sun-dried apricots freshapricot peel is plainer better, after three percent bisulfite treatment system take the form of dry ted, builtusing20%sugar candied conducted before rehydration4h,20h softened. After sugar permeabilitysecondary to the core, take35%of secondary permeability sugar sugar. Add1.5%Maltooligosugars,0.2%CMC-Na、0.3%Alginate composite of insurance agent, and1.0%Sodium,0.6%Sodium dihydrogenphosphate、0.2%Lactate composite of insurance agen. Use sugar cooking5min, sugar permeability after24h shaping, drying, most products can be better to keep the flavor. Low-sugar products, plumpappearance, color Huang Liang, a good chew toughness.
Keywords/Search Tags:fresh apricots, dried apricots, SO2residues, apricot
PDF Full Text Request
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