B Gio Dc V o To Trng i Hc Nng Lm TP.HCM Mn: PH GIA THC PHM CHUYN : PH GIA TRONG NC GII KHT GV: NG TH TY NA

Lp: DH10DD Nhm thc hin: 1.Kiu Mai Anh 2.Ng Th Thng 3.L Bch Ngc Trn 4.Nguyn Trn Dim My 5.Trn Ngc Dim Trang MSSV: 10148322 10148257 10148276 10148150 10148271

PH GIA THC PHM

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I. TNG QUAN V NC GII KHT: 1. Gii thiu: Nc gii kht l mt thc ung c bit ca con ngi, trong n hu nh l thnh phn chnh. Nc l iu cn thit cho cuc sng, nhiu hn ng k so vi thc phm. i vi ngi c th tn ti mt vi thng khng c thc n nhng khng th sng st sau 1 tun m khng s dng bt k mt cht lng no. Cc dng nc gii kht: Nc gii kht hng liu Nc ung tng lc Nc ung thin nhin

2. Nguyn liu: Sn phm c pha ch t cc thnh phn sau: o Nc Nc s dng phi t cc tiu chun nh: - Ch tiu cm quan: nc phi trong sut, khng mu, khng mi v l. - Ch tiu ho l: hm lng mui v kim loi phi tho mn TCVN6069:2004. -Ch tiu vi sinh: nh gi nhim bn ca nc da trn hai khi nim Chun s E.coli: l th tich nc t nht ch php pht hin mt vi trng ng rut. Ch s Coli: l s vi trng ng rut E.coli ti a cho php trong 1 lt nc. Hai ch s ny ph thuc qui nh ca tng nc. i vi nc dng pha ch nc gii kht yu cu tng s VSV khng qu 20 t bo/1ml v m bo t tiu chun (TCVN6069:2004) o ng - cht to ngt S dng cc loi ng kt tinh cht lng cao nh RS, RE ca cc nh my ng. Saccharose rt d b thu phn. Khi b thu phn, lm tng ngt ca siro, hn ch c s ti kt tinh ca saccharose trong dung dch siro v sn phm. o CO2 CO2 c th thu c t nhiu ngun gc khc nhau: - T khi l t ca cc l hi hay l nhit in, l nung vi. - T cc ngun nc khong bo ho CO2 thin nhin. - T qu trnh ln memn dich ng cc nh my bia ru. Yu cu k thut: kh CO2 trc khi a vo s dng phi x l t tinh khit cao 99,9%. o Acid thc phm- cht to chua2

PH GIA THC PHM

- Trong sn xut thng dng mt s acid nh: Acid citric, acid tartaric, acid malic. - Cng dng ca acid thc phm: to v chua t nhin v du. c ch VSV, ko di thi gian bo qun sn phm. o Cht to mu - Cht mu t nhin: c trch t r cy, v qu hoc mu caramen, mu carotenoid. - cht mu tng hp: Tartrazine (C16H9N4Na3O9S2), mu cam. Sunset yellow FCF (C16H10N2Na2O7S2). Amaranth (C20H11N2Na3O10S3), tm. Briliant Blue (C37H34N2Na2O9S3), xanh bin. Ponceau 4R (C20H11N2Na3O10S3), thm. Fast green FCF (C17H34N2Na2o10s3), xanh l. - Yu cu s dng: phm mu s dng phi m bo tinh khit v phi nm trong danh mc cho php ca B y t hin hnh (QDD505/BYT). Liu lng s dng chung