• Journal of Dairy Science and Biotechnology
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• v.39 no.1
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• pp.20-26
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• 2021

Lactase (β-galactosidase) is abundant in the small intestine during early childhood and gradually decreases with age. Lactic acid bacteria (LAB) present in yogurt could survive in the stomach, and lactase produced by these LAB can aid in lactose breakdown in the small intestine, thereby reducing lactose intolerance. This study aims to provide preliminary data for development of lactose-free yogurts for the elderly, and investigate the effect of lactose-hydrolyzed milk on the growth of starter cultures. The pH during yogurt fermentation using lactose-free milk was slightly higher at 2 and 4 h of incubation, but reached 4.5 at the end of incubation, similar to that of the yogurt prepared from regular milk. The number of viable cells of Streptococcus thermophilus reached 108 CFU/mL after 2 h of incubation and increased to 109 CFU/mL after 4 h of incubation. During yogurt fermentation, the viable cells of Lactobacillus species and Bifidobacterium longum did not affect lactose hydrolysis. Although lactose-hydrolyzed milk did not promote the growth of starter cultures, manufacturing yogurt with lactose-free milk could be beneficial for the intestinal health of lactose-sensitive elderly.

• Journal of The Korea Institute of Healthcare Architecture
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• v.16 no.3
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• pp.57-68
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• 2010

The purpose of this study is to investigate the current characteristics of healthcare and welfare policies in Japan focused on the related policies in 2000's. In Japan, with the perspectives of entering the super-aged society by 2005 and the movement of all of the baby boom generation into the elderly generation by 2015, more rapid progress to the aging society is expected. From this situation, Japanese government has developed diverse elderly-oriented strategies such as "structural reform of social security", "nursing care system" and "gold plan 21" in 2000's. However, most of the related researches targeted the period to early 2000's, excluding the papers about the individual policies. Recently in our country, many related policies have been developed such as the enforcement of "long term care insurance system for the elderly" by 5 year period reevaluations and the preparation for 2nd step of "Plan for Ageing Society and Population"(2011~2015). At this moment, the investigation on the related policies of Japan could give appropriate references to us, a late starter of aging society.