Abstract

자연환경에서 건염햄 제조 시 소금 처리수준과 아질산염 처리 유무가 뒷다리 중량감소, 제품의 일반성분, 화학적 특성 및 조직적 특성에 어떠한 영향을 미치는지를 조사하기 위해 HS(뒷다리 kg당 9.2g소금 처리), HS+<TEX>$NaNO_2$</TEX> (뒷다리 kg당 9.2g 소금+100 ppm 아질산염 처리), LS(뒷다리 kg당 6.2g 소금 처리), LS+<TEX>$NaNO_2$</TEX>(뒷다리 kg당 6.2g 소금+1100 ppm 아질산염 처리) 등 4개 처리구에 뒷다리 3개씩을 배치하여 조사하였다. 소금처리 수준과 아질산염첨가 유무는 전체 중량감소율에 영향을 미치지 않았으며 (p>0.05), 제조과정 중 중량감소는 건조기간 동안 가장 많이 발생하였다(27.46%, 28.25%, 26.99%, 28.42%). 자연환경에서 제조된 건염햄의 일반성분을 분석한 결과, 저염처리구(LS)가 아질산염을 처리한 고염처리구(HS+<TEX>$NaNO_2$</TEX>)와 아질산염을 처리한 저염처리구(LS+<TEX>$NaNO_2$</TEX>) 보다 수분함량이 높았다. 지방함량, 단백질 함량, 회분 함량은 소금처리 수준과 아질산염 처리에 영향을 받지 않았다. 경도(hardness)와 씹힘성(Chewiness)은 저염처리구(LS)에서 가장 낮았으며, 아질산염 처리는 건염햄의 조직감에 영향을 미치지 않는 것으로 조사되었다. 저염처리구(LS) 건염햄 대퇴두갈래근의 수분활성도는 고염처리구(HS)와 아질산염을 처리한 고염처리구(HS+<TEX>$NaNO_2$</TEX>) 보다 높았으며, 염도는 아질산염을 처리한 저염구(LS+<TEX>$NaNO_2$</TEX>)가 고염처리구(HS)와 아질산염을 처리한 고염처리구(HS+<TEX>$NaNO_2$</TEX>) 보다 낮았다. 아질산염 잔존량은 아질산염 처리유무에 영향을 받지 않았다. 육색 명도(L)와 적색도(a), 색도(<TEX>$h^{\circ}$</TEX>)는 소금처리 수준과 아질산염에 영향을 받지 않았으며, 황색도(b)와 채도(chroma)는 아질산염을 처리한 고염처리구(HS+<TEX>$NaNO_2$</TEX>)에서 높은 값을 나타내었다. The aim of this work was to analyze the effects of salt and <TEX>$NaNO_2$</TEX> on weight loss, proximate compositions. chemical parameters and texture characteristics of dry-cured ham processed using Korean methods. Four different treatments were considered: The HS group of 3 hams (11.30 kg) was salted with 9.2 g/kg salt (w/w) (high salt batch), the HS+<TEX>$NaNO_2$</TEX> group of 3 hams (10.65 kg) was salted same as HS group and added 100 ppm <TEX>$NaNO_2$</TEX>. The LS group of 3 hams (11.42 kg) was salted with 6.2 g/kg salt (w/w) (Low salt batch), the LS+<TEX>$NaNO_2$</TEX> group of 3 hams (10.62 kg) was salted same as LS group and added 100 ppm <TEX>$NaNO_2$</TEX>. The highest weight losses took place at the drying stage (27.46, 28.25, 26.99, and 28.42%). However, there were no significant differences in the weight losses between treatments (p>0.05). The moisture content was significantly affected with addition of <TEX>$NaNO_2$</TEX> (p<0.05), the LS hams had significantly higher moisture content than HS+<TEX>$NaNO_2$</TEX> and LS+<TEX>$NaNO_2$</TEX> (p<0.05). The level of salt and <TEX>$NaNO_2$</TEX> did not affect the fat, protein and ash contents. The hardness and chewiness in biceps femoris muscle from LS hams were significantly lower than in the muscles from HS+<TEX>$NaNO_2$</TEX> hams (p<0.05). The <TEX>$NaNO_2$</TEX> did not affect the texture characteristics of dry-cured hams. The processing conditions significantly affected the chemical parameters of biceps femoris muscle (p<0.05). The water activity in biceps femoris muscle from LS hams was significantly higher than in muscles from HS and HS+<TEX>$NaNO_2$</TEX> hams (p<0.05). The salt content in biceps femoris muscles from LS+<TEX>$NaNO_2$</TEX> hams was significantly lower than in the muscles from HS and HS+<TEX>$NaNO_2$</TEX> hams (p<0.05). The <TEX>$NaNO_2$</TEX> treatment did not affect the <TEX>$NaNO_2$</TEX> content in biceps femoris muscles (p>0.05). The processing conditions did not significantly affect the lightness (L), redness (a), and <TEX>$h^{\circ}$</TEX> of biceps femoris muscles (p>0.05). The yellowness (b) and chroma in biceps femoris muscle from HS+<TEX>$NaNO_2$</TEX> hams were significantly higher than in the muscles from HS and LS hams.

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